1 Then fourteen years after I went up again to Jerusalem with Barnabas, and took Titus with me also. 2 And I went up by revelation, and communicated unto them that gospel which I preach among the Gentiles, but privately to them which were of reputation, lest by any means I should run, or had run, in vain. 3 But neither Titus, who was with me, being a Greek, was compelled to be circumcised: 4 And that because of false brethren unawares brought in, who came in privily to spy out our liberty which we have in Christ Jesus, that they might bring us into bondage: 5 To whom we gave place by subjection, no, not for an hour; that the truth of the gospel might continue with you. 6 But of these who seemed to be somewhat, (whatsoever they were, it maketh no matter to me: God accepteth no man's person:) for they who seemed to be somewhat in conference added nothing to me: 7 But contrariwise, when they saw that the gospel of the uncircumcision was committed unto me, as the gospel of the circumcision was unto Peter; 8 (For he that wrought effectually in Peter to the apostleship of the circumcision, the same was mighty in me toward the Gentiles:) 9 And when James, Cephas, and John, who seemed to be pillars, perceived the grace that was given unto me, they gave to me and Barnabas the right hands of fellowship; that we should go unto the heathen, and they unto the circumcision. 10 Only they would that we should remember the poor; the same which I also was forward to do. 11 But when Peter was come to Antioch, I withstood him to the face, because he was to be blamed. 12 For before that certain came from James, he did eat with the Gentiles: but when they were come, he withdrew and separated himself, fearing them which were of the circumcision. 13 And the other Jews dissembled likewise with him; insomuch that Barnabas also was carried away with their dissimulation. 14 But when I saw that they walked not uprightly according to the truth of the gospel, I said unto Peter before them all, If thou, being a Jew, livest after the manner of Gentiles, and not as do the Jews, why compellest thou the Gentiles to live as do the Jews? 15 We who are Jews by nature, and not sinners of the Gentiles, 16 Knowing that a man is not justified by the works of the law, but by the faith of Jesus Christ, even we have believed in Jesus Christ, that we might be justified by the faith of Christ, and not by the works of the law: for by the works of the law shall no flesh be justified. 17 But if, while we seek to be justified by Christ, we ourselves also are found sinners, is therefore Christ the minister of sin? God forbid. 18 For if I build again the things which I destroyed, I make myself a transgressor. 19 For I through the law am dead to the law, that I might live unto God. 20 I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me. 21 I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain.
[AD 202] Irenaeus on Galatians 2:1
But I went up by revelation, and communicated to them that Gospel which I preached among the Gentiles."

[AD 220] Tertullian on Galatians 2:1
But with regard to the countenance of Peter and the rest of the apostles, he tells us that "fourteen years after he went up to Jerusalem," in order to confer with them about the rule which he followed in his gospel, lest perchance he should all those years have been running, and be running still, in vain, (which would be the case, ) of course, if his preaching of the gospel fell short of their method.

[AD 370] Gaius Marius Victorinus on Galatians 2:1
These men he had as witnesses, through whom he proved that his gospel was given to him through revelation, seeing that he said “Barnabas went up with me,” and he also took Titus, whose faith and gospel were approved by everyone.

[AD 384] Ambrosiaster on Galatians 2:1
His renown had been growing for a long time among all the Jews, though he had not been seen face to face … but on account of the law he had acquired a bad reputation among the Jews, as though his preaching was out of harmony with the preaching of the other apostles. Many were having doubts on account of this, which were sufficient to make the Gentiles anxious, in case they had been trained in something other than that which was preached by the apostles who had been with the Lord. For on this precise occasion the Galatians were undermined by Jews who were saying that Paul taught something other than Peter taught. This is the reason for his going up to Jerusalem, at the bidding of the Lord’s revelation, disclosing to them the implications of his preaching, with Barnabas and Titus as witnesses of his preaching, one from the Jews and one from the Gentiles, so that if any took offense at him it might be assuaged by their testimony.

[AD 407] John Chrysostom on Galatians 2:1-2
"Then after the space of fourteen years, I went up again to Jerusalem with Barnabas, taking Titus also with me. And I went up by revelation."

His first journey was owing to his desire to visit Peter, his second, he says, arose from a revelation of the Spirit.

[AD 420] Jerome on Galatians 2:1-2
(Chapter 2 - Verses 1, 2) Then after fourteen years, I went up again to Jerusalem with Barnabas, taking Titus along also. I went up by revelation, and I discussed with them the gospel that I preach to the Gentiles, but privately with those who seemed to be influential, so that I might not be running in vain or have run in vain. This matter arose because of false brothers secretly brought in, who slipped in to spy out our freedom that we have in Christ Jesus, so that they might bring us into slavery. And to speak more truthfully, the Greek word ἀνεθέμην conveys something different than what is understood among us, namely that we compare what we know with a friend and place it in their lap and conscience, so that, with equal counsel, what we know may either be approved or disapproved. Therefore, after fourteen years, he went up to Jerusalem. And he who had previously gone only to see Peter and stayed with him for fifteen days, now says that he went there to confer with the apostles about the Gospel. And he took along Barnabas, who was circumcised, and Titus, who was uncircumcised among the Gentiles, so that every word may be established by the testimony of two or three witnesses (Deut. 19:15). But it is one thing to compare, another to learn. Among those who compare, there is equality; between the teacher and the learner, the one who learns is lesser. At the beginning of faith, he saw the apostles during their journey. After seventeen years (as he himself says), he speaks fully with them and humbles himself: and lest he might be running or might have run in vain, he inquires. For a twofold reason, so that the humility of Paul, who, as a teacher, had already surpassed the apostles who came before him in the whole world of the Gentiles, might be shown: and so that the Galatians may not say that they rejected his Gospel, also condemning those who presided over the Churches in Judea. Moreover, it also teaches that for the sake of the faith of Christ and the liberty of the Gospel, he dared to lead Titus, an uncircumcised man, to those same individuals who knew more about him, who accused him of breaking the Law, destroying Moses, and completely doing away with circumcision. And in the midst of such a great multitude of Jews and his enemies, who desired to shed his blood out of zeal for the Law, neither he nor Titus gave way to fear, but stood firm in necessity. They were able to obtain forgiveness, either in terms of position or authority of the elders, or in terms of the number of churches that believed in Christ from the Jews, or in terms of time, so as not to endure such great envy at the same time. Some say that after fourteen years he went up to Jerusalem, when a dispute arose among the believers in Antioch regarding the observance or omission of the Law, as recorded in the Acts of the Apostles. It was decided to go to Jerusalem and wait for the judgment of the elders, when Paul and Barnabas themselves were sent. And this is what is written in the Latin codices: We yielded to subjection for a time, so that the truth of the Gospel would persist among you. That is why, clearly, Paul and Barnabas were sent to Jerusalem as if it were doubtful, in order to confirm by the judgment of the elders that the grace of the Gospel had also been given to the believers, and that there would be no further doubt about the omission of circumcision. For it had been commanded by the letters of the apostles that the yoke of the Law should be removed from those who believed in Christ from the Gentiles. However, it can be understood that when he says, 'I conferred with them the Gospel that I preach to the Gentiles,' he means separately to those who seemed important, so that I might not run or have run in vain, and thus it can be understood that he shared with the apostles in secret the grace of Gospel freedom and the abolishment of the old Law, because of the multitude of believing Jews who were not yet able to hear about the fulfillment and end of the Law, and who, in the absence of Paul, had falsely boasted in Jerusalem that he was going on a pointless or fruitless journey, thinking that the old Law should not be followed. Not because Paul feared that he had preached a false Gospel among the Gentiles for seventeen years; but to show his predecessors that he was not running or had run in vain, as they had thought in their ignorance.

[AD 458] Theodoret of Cyrus on Galatians 2:1
Both [Barnabas and Titus] spent an extended time in Antioch, making a large body of converts and binding them to live according to the law of grace. But some supporters of the law who arrived from Judea tried to persuade the Gentiles to adopt the way of life according to the law But those great heralds of the truth, Paul and Barnabas, repudiated the teaching they promoted. They wished to persuade the congregation of the faithful that this was also the view of the great apostles. So they immediately went straightway to Judea, to apprise the apostles of what was going on.

[AD 749] John Damascene on Galatians 2:1
I did not come, he says, to be taught, but to inform; which brings only honor to him.
[AD 155] Polycarp of Smyrna on Galatians 2:2
I exhort you all, therefore, to yield obedience to the word of righteousness, and to exercise all patience, such as ye have seen

[AD 220] Tertullian on Galatians 2:2
There would be still wanted that Gospel which St. Paul found in existence, to which he yielded his belief, and with which he so earnestly wished his own to agree, that he actually on that account went up to Jerusalem to know and consult the apostles, "lest he should run, or had been running in vain; " in other words, that the faith which he had learned, and the gospel which he was preaching, might be in accordance with theirs.

[AD 220] Tertullian on Galatians 2:2
For their rudimentary belief, which was still in suspense about the observance of the law, deserved this concessive treatment, when even the apostle himself had some suspicion that he might have run, and be still running, in vain. Accordingly, the false brethren who were the spies of their Christian liberty must be thwarted in their efforts to bring it under the yoke of their own Judaism before that Paul discovered whether his labour had been in vain, before that those who preceded him in the apostolate gave him their right hands of fellowship, before that he entered on the office of preaching to the Gentiles, according to their arrangement with him.

[AD 370] Gaius Marius Victorinus on Galatians 2:2
That is, those through whom the commandments and gospel of God were being handed down, such as apostles and the rest. “To these men,” he says, “I privately explained my gospel, which I preach among the Gentiles, so that if there was anything that they were handing on otherwise, they could correct it or could emend anything that I myself was handing on otherwise. This therefore was the cause of my going up to Jerusalem, and for this reason it was revealed to me that I should go up, so that it might be more readily known that my gospel to the Gentiles and their gospel to the Jews were the same.” Now the purpose of his expounding it privately was that shame might be taken from among them, and they might communicate to one another the mysteries that they knew. Since they all shared one opinion and one gospel, what was it that he labored to persuade them of? That they should not add anything new or join anything to it. That is the cause of the present sin of the Galatians in following Judaism and the practice of circumcision, the sabbath and other things.

[AD 370] Gaius Marius Victorinus on Galatians 2:2
“So that I should not run or have run in vain.” That is [he says], “lest I should fail to preach a full gospel. For if I have preached anything less, I have run in vain or I now run in vain.”

[AD 407] John Chrysostom on Galatians 2:2
Ver. 2. "And I laid before them the Gospel which I preach among the Gentiles, but privately before them who were of repute, lest by any means I should be running or had run in vain."

What is this, O Paul! You who neither at the beginning nor after three years would confer with the Apostles, do you now confer with them, after fourteen years are past, lest you should be running in vain? Better would it have been to have done so at first, than after so many years; and why did you run at all, if not satisfied that thou were not running in vain? Who would be so senseless as to preach for so many years, without being sure that his preaching was true? And what enhances the difficulty is, that he says he went up by revelation; this difficulty, however, will afford a solution of the former one. Had he gone up of his own accord, it would have been most unreasonable, nor is it possible that this blessed soul should have fallen into such folly; for it is himself who says, "I therefore so run, as not uncertainly; so fight I, as not beating the air." [1 Corinthians 9:26] If therefore he runs, "not uncertainly," how can he say, "lest I should be running, or had run, in vain?" It is evident from this, that if he had gone up without a revelation, he would have committed an act of folly. But the actual case involved no such absurdity; who shall dare to still harbor this suspicion, when it was the grace of the Spirit which drew him? On this account he added the words "by revelation," lest, before the question was solved, he should be condemned of folly; well knowing that it was no human occurrence, but a deep Divine Providence concerning the present and future. What then is the reason of this journey of his? As when he went up before from Antioch to Jerusalem, it was not for his own sake, (for he saw clearly that his duty was simply to obey the doctrines of Christ,) but from a desire to reconcile the contentious; so now his object was the complete satisfaction of his accusers, not any wish of his own to learn that he had not run in vain. They conceived that Peter and John, of whom they thought more highly than of Paul, differed from him in that he omitted circumcision in his preaching, while the former allowed it, and they believed that in this he acted unlawfully, and was running in vain. I went up, says he, and communicated unto them my Gospel, not that I might learn anything myself, (as appears more clearly further on,) but that I might convince these suspicious persons that I do not run in vain. The Spirit forseeing this contention had provided that he should go up and make this communication.

Wherefore he says that he went up by revelation, and, taking Barnabas and Titus as witnesses of his preaching, communicated to them the Gospel which he preached to the Gentiles, that is, with the omission of circumcision. "But privately before them who were of repute." What means "privately?" Rather, he who wishes to reform doctrines held in common, proposes them, not privately, but before all in common; but Paul did this privately, for his object was, not to learn or reform anything, but to cut off the grounds of those who would fain deceive. All at Jerusalem were offended, if the law was transgressed, or the use of circumcision forbidden; as James says, "You see, brother, how many thousands there are among the Jews of them which have believed; and they are informed of you, that you teach to forsake the law." [Acts 21:20, et seq] Since then they were offended he did not condescend to come forward publicly and declare what his preaching was, but he conferred privately with those who were of reputation before Barnabas and Titus, that they might credibly testify to his accusers, that the Apostles found no discrepancy in his preaching, but confirmed it. The expression, "those that were of repute," (τοῖς δοκοῦσιν) does not impugn the reality of their greatness; for he says of himself, "And I also seem (δοκῶ) to have the Spirit of God," thereby not denying the fact, but stating it modestly. And here the phrase implies his own assent to the common opinion.

[AD 407] John Chrysostom on Galatians 2:2
What is this, O Paul! Thou who neither at the beginning nor after three years wouldest confer with the Apostles, do you now confer with them, after fourteen years are past, lest you should be running in vain? Better would it have been to have done so at first, than after so many years; and why did you run at all, if not satisfied that thou were not running in vain? Who would be so senseless as to preach for so many years, without being sure that his preaching was true? And what enhances the difficulty is, that he says he went up by revelation; this difficulty, however, will afford a solution of the former one. Had he gone up of his own accord, it would have been most unreasonable, nor is it possible that this blessed soul should have fallen into such folly; for it is himself who says, I therefore so run, as not uncertainly; so fight I, as not beating the air. 1 Corinthians 9:26 If therefore he runs, not uncertainly, how can he say, lest I should be running, or had run, in vain? It is evident from this, that if he had gone up without a revelation, he would have committed an act of folly. But the actual case involved no such absurdity; who shall dare to still harbor this suspicion, when it was the grace of the Spirit which drew him? On this account he added the words by revelation, lest, before the question was solved, he should be condemned of folly; well knowing that it was no human occurrence, but a deep Divine Providence concerning the present and future. What then is the reason of this journey of his? As when he went up before from Antioch to Jerusalem, it was not for his own sake, (for he saw clearly that his duty was simply to obey the doctrines of Christ,) but from a desire to reconcile the contentious; so now his object was the complete satisfaction of his accusers, not any wish of his own to learn that he had not run in vain. They conceived that Peter and John, of whom they thought more highly than of Paul, differed from him in that he omitted circumcision in his preaching, while the former allowed it, and they believed that in this he acted unlawfully, and was running in vain. I went up, says he, and communicated unto them my Gospel, not that I might learn anything myself, (as appears more clearly further on,) but that I might convince these suspicious persons that I do not run in vain. The Spirit forseeing this contention had provided that he should go up and make this communication.

Wherefore he says that he went up by revelation, and, taking Barnabas and Titus as witnesses of his preaching, communicated to them the Gospel which he preached to the Gentiles, that is, with the omission of circumcision. But privately before them who were of repute. What means privately? Rather, he who wishes to reform doctrines held in common, proposes them, not privately, but before all in common; but Paul did this privately, for his object was, not to learn or reform any thing, but to cut off the grounds of those who would fain deceive. All at Jerusalem were offended, if the law was transgressed, or the use of circumcision forbidden; as James says, You see, brother, how many thousands there are among the Jews of them which have believed; and they are informed of you, that you teach to forsake the law. Acts 21:20, et seq Since then they were offended he did not condescend to come forward publicly and declare what his preaching was, but he conferred privately with those who were of reputation before Barnabas and Titus, that they might credibly testify to his accusers, that the Apostles found no discrepancy in his preaching, but confirmed it. The expression, those that were of repute, (τοῖς δοκοῦσιν) does not impugn the reality of their greatness; for he says of himself, And I also seem (δοκῶ) to have the Spirit of God, thereby not denying the fact, but stating it modestly. And here the phrase implies his own assent to the common opinion.
[AD 407] John Chrysostom on Galatians 2:2
The purpose for his saying “through revelation” was that even before the solution to the question [why he spoke of running in vain] no one should accuse him of any ignorance, knowing that what occurred was not of human origin but of a certain divine dispensation which had in view many things, both present and to come. What then is the reason for this journey? When he first went up from Antioch to Jerusalem it was not for his own sake, for he himself knew that he ought to follow strictly the teachings of Christ. Rather he wanted to win over those who opposed him. He himself had no need at this point to ascertain whether he ran in vain, but [he went up] to satisfy his detractors.

[AD 407] John Chrysostom on Galatians 2:2
It is indeed true that one who is eager to set right a common doctrine undertakes this not privately but in public. But it was not so with Paul, for he did not wish to learn or correct anything but rather to overthrow the pretext of those who were intent on deception. For since everyone in Jerusalem was scandalized if someone transgressed the law … he did not attempt to come forward openly and reveal his own preaching.

[AD 420] Jerome on Galatians 2:2
What he says [about meeting privately] could be understood as meaning that the grace of evangelical liberty and the obsolescence of the law that was now abolished was discussed in confidence with the apostles on account of the many Jewish believers who were not yet able to hear that Christ was the fulfillment and end of the law. And these men, when Paul was absent, had boasted in Jerusalem that he was running and had run in vain when he supposed that the old law was not to be followed.

[AD 430] Augustine of Hippo on Galatians 2:2
“So that I should not run or have run in vain” we should understand to be addressed as if in a question, not to those with whom he compared his gospel in private but to those to whom he was writing, so that it might appear that he was not running and had not run in vain from the fact that by the testimony of the others he was certified not to dissent from the truth of the gospel.

[AD 435] John Cassian on Galatians 2:2
Who could be so presumptuous and blind as to dare to trust his own judgment and discretion, when the vessel of election bears witness that he needs the partnership of his coapostles?

[AD 749] John Damascene on Galatians 2:2
At the beginning, when he received the Gospel, he did not go up, nor did he put this to the Apostles. For, having learned from Christ, he did not need their teaching. As the time went by, however, and while he was teaching the nations the Gospel without circumcision, some became scandalized, since those around Peter did not dismiss circumcision, whereas he was alone in dismissing it. Thus, because the Holy Spirit wished to cut out this scandal of the others, ordered him to come up with witnesses and to put it to the Apostles that he preaches without circumcision, so that they too may join him and this scandal for human beings might be dissolved.
[AD 220] Tertullian on Galatians 2:3
So great had been his desire to be approved and supported by those whom you wish on all occasions to be understood as in alliance with Judaism! When indeed he says, that "neither was Titus circumcised," he for the first time shows us that circumcision was the only question connected with the maintenance of the law, which had been as yet agitated by those whom he therefore calls "false brethren unawares brought in.

[AD 220] Tertullian on Galatians 2:3
When he first says, "Neither Titus, who was with me, being a Greek, was compelled to be circumcised," and then adds, "And that because of false brethren unawares brought in," etc.

[AD 384] Ambrosiaster on Galatians 2:3
The implication is “Why should you be circumcised, when Titus was not compelled to undergo circumcision by the apostles? Titus, who had an important role, was accepted without circumcision.”

[AD 407] John Chrysostom on Galatians 2:3
Ver. 3. "But not even Titus, who was with me, being a Greek, was compelled to be circumcised."

What means, "being a Greek?" Of Greek extraction, and not circumcised; for not only did I so preach but Titus so acted, nor did the Apostles compel him to be circumcised. A plain proof this that the Apostles did not condemn Paul's doctrine or his practice. Nay more, even the urgent representations of the adverse party, who were aware of these facts, did not oblige the Apostles to enjoin circumcision, as appears by his own words —

[AD 420] Jerome on Galatians 2:3-5
(Vers. 3-5.) But not even Titus, who was with me, though he was a Gentile, was compelled to be circumcised. Yet because of false brothers secretly brought in—who slipped in to spy out our freedom that we have in Christ Jesus, so that they might bring us into slavery— to them we did not yield in submission even for a moment, so that the truth of the gospel might be preserved for you. But even Titus, who was with me, was not compelled to be circumcised, although he was a Gentile. This matter arose because of false brothers secretly brought in, who slipped in to spy out our freedom that we have in Christ Jesus, so that they might bring us into slavery. But what is this truth of the Gospel, to give in to the hypocrisy of the Jews; and to consider as scybala what you once esteemed, and to despise as losses, and to observe and esteem as something, when they are nothing? But it strongly opposes the meaning of the Epistle itself, to call the Galatians back to circumcision. This is the main theme throughout his discourse, to teach that he is a Hebrew among the Hebrews, once observing all the works of the Law, circumcised on the eighth day according to the Law of the Pharisees: nevertheless, for the grace of Christ, to completely despise everything. For when he went to Jerusalem, and the false brethren, who believed in circumcision, wanted to compel him to circumcise Titus; neither Titus, nor did he give in to violence, so that they would safeguard the truth of the Gospel. But if he says that he was compelled by necessity to circumcise Titus: how does he recall the Galatians from circumcision, from which neither Titus, who was with him from the Gentiles, could excuse himself in Jerusalem? Therefore, according to the Greek manuscripts, it should be read, 'To whom we did not yield in subjection, not even for an hour,' so that it may be understood subsequently: so that the truth of the Gospel may remain with you. But if the testimony of the Latin exemplars is pleasing to anyone, we must understand it according to the higher sense: that the purpose was not for Titus to be circumcised, but to go to Jerusalem. For this reason, Paul and Barnabas submitted to going to Jerusalem, due to the sedition caused by the Law of Antioch. This was done so that the truth of the Gospel would be confirmed by the letter of the apostles and remain among the Galatians, which was not in the literal sense, but in the spiritual sense. It was not in the carnal understanding, but in spiritual intelligence, and not in overt Judaism, but in hidden understanding. It is worth knowing that the conjunction 'autem,' which is placed in this position, is superfluous if it is read without any purpose to respond to it and if it concludes the previous statement. However, it serves to maintain the order of reading and the sense of the passage. So, Titus, who was with me, being a Gentile, was not compelled to be circumcised. And immediately after, it explains the reason why he was being urged to undergo circumcision against his will. 'Because of the false brothers secretly brought in, who slipped in to spy out our freedom that we have in Christ Jesus, so that they might bring us into slavery.' But when they were serving as ministers and wished to drag us into the servitude of the Law from the freedom of Christ, we did not even yield to them for a moment, so that we might not give any occasion to them to accuse us. And we did this primarily because of the ecclesiastical peace, so that we could excuse ourselves from necessity, and we did all of this so that you would not have any opportunity to depart from the grace of the Gospel. Therefore, if we, while in Jerusalem, among so many Jews who were falsely claiming to be brothers and those who were exerting influence over us to some extent, could not be compelled by force or reason to observe the circumcision that we knew was abolished, then you, coming from the Gentiles, you in Galatia, you to whom no violence can be done, voluntarily abandoning the grace, have transcended the antiquity of the already abolished Law.

[AD 430] Augustine of Hippo on Galatians 2:3
It was because of the intrigues of false brethren that Titus was not compelled to be circumcised. It was not possible to require circumcision of him. Those who had crept in to spy on their liberty had a vehement expectation and desire for the circumcision of Titus. They wanted, with Paul’s testimony and consent, to preach circumcision as necessary to salvation.

[AD 749] John Damascene on Galatians 2:3
That is, by the Apostles; which is, of course, a highest proof that they should not pass sentence against the Apostle, who did not circumcise the nations.
[AD 220] Tertullian on Galatians 2:4
So great had been his desire to be approved and supported by those whom you wish on all occasions to be understood as in alliance with Judaism! When indeed he says, that "neither was Titus circumcised," he for the first time shows us that circumcision was the only question connected with the maintenance of the law, which had been as yet agitated by those whom he therefore calls "false brethren unawares brought in." These persons went no further than to insist on a continuance of the law, retaining unquestionably a sincere belief in the Creator.

[AD 220] Tertullian on Galatians 2:4
Therefore he says: "Because of false brethren unawares brought in, who came in privily to spy out our liberty which we have in Christ, that they might bring us into bondage, to whom we gave place by subjection not even for an hour." Let us only attend to the clear sense and to the reason of the thing, and the perversion of the Scripture will be apparent.

[AD 220] Tertullian on Galatians 2:4
"Liberty in Christ" has done no injury to innocence.

[AD 235] Hippolytus of Rome on Galatians 2:4
For up to the present time both the Gentiles and the Jews of the circumcision watch and busy themselves with the dealings of the Church, desiring to suborn false witnesses against us, as the apostle says: "And that because of false brethren unawares brought in, who came in privily to spy out our liberty which we have in Christ Jesus."

[AD 384] Ambrosiaster on Galatians 2:4
By “secretly” he means that they had entered by deception, passing themselves off as brothers when they were enemies. By “slipped in” he means that they came in a humble manner, feigning friendship.… To “spy out” is to enter in such a way as to invent one thing and discover another, whereby they may challenge our liberty.… “Liberty in Jesus Christ” means not being subject to the law. “That they might bring us into bondage” means … to subject us to the law of circumcision.

[AD 407] John Chrysostom on Galatians 2:4
Ver. 4. "And that because of the false brethren, privily brought in."

Here arises a very important question, Who were these false brethren? If the Apostles permitted circumcision at Jerusalem, why are those who enjoined it, in accordance with the Apostolic sentence, to be called false brethren? First; because there is a difference between commanding an act to be done, and allowing it after it is done. He who enjoins an act, does it with zeal as necessary, and of primary importance; but he who, without himself commanding it, allows another to do it who wishes yields not from a sense of its being necessary but in order to subserve some purpose. We have a similar instance, in Paul's Epistle to the Corinthians, in his command to husbands and wives to come together again. To which, that he might not be thought to be legislating for them, he subjoins, "But this I say by way of permission, not of commandment." [1 Corinthians 7:5] For this was not a judgment authoritatively given but an indulgence to their incontinence; as he says, "for your incontinency." Would you know Paul's sentence in this matter? Hear his words, "I would that all men were even as I myself," [1 Corinthians 7:7] in continence. And so here, the Apostles made this concession, not as vindicating the law, but as condescending to the infirmities of Judaism. Had they been vindicating the law, they would not have preached to the Jews in one way, and to the Gentiles in another. Had the observance been necessary for unbelievers, then indeed it would plainly have likewise been necessary for all the faithful. But by their decision not to harass the Gentiles on this point, they showed that they permitted it by way of condescension to the Jews. Whereas the purpose of the false brethren was to cast them out of grace, and reduce them under the yoke of slavery again. This is the first difference, and a very wide one. The second is, that the Apostles so acted in Judæa, where the Law was in force, but the false brethren, every where, for all the Galatians were influenced by them. Whence it appears that their intention was, not to build up, but entirely to pull down the Gospel, and that the thing was permitted by the Apostles on one ground and zealously practiced by the false brethren on another.

Ver. 4. "Who came in privily to spy out our liberty, which we have in Christ Jesus, that they might bring us into bondage."

He points out their hostility by calling them spies; for the sole object of a spy is to obtain for himself facilities of devastation and destruction, by becoming acquainted with his adversary's position. And this is what those did, who wished to bring the disciples back to their old servitude. Hence too appears how very contrary their purpose was to that of the Apostles; the latter made concessions that they might gradually extricate them from their servitude, but the former plotted to subject them to one more severe. Therefore they looked round and observed accurately and made themselves busybodies to find out who were uncircumcised; as Paul says, "they came in privily to spy out our liberty," thus pointing out their machinations not only by the term "spies," but by this expression of a furtive entrance and creeping in.

[AD 407] John Chrysostom on Galatians 2:4
No small thing is at stake here. The question is, if the apostles at this point consented to circumcision, why did Paul apply the term “false brothers” to those who also imposed circumcision in accordance with the sentiment of the apostles? First of all, it is one thing actively to impose an act and another passively to consent to it once done. For the one who zealously imposes it makes it necessary and paramount. But the one who, without imposing it, does not prevent the one who wants it, does not consent to it as a necessity but rather through passive consent seeks to accomplish other purposes. … Second, the apostles did this only in Judea, but the false apostles had gone about everywhere. They had all the Galatians in their grip.

[AD 749] John Damascene on Galatians 2:4
The preposition ‘because of’ (dia) was put here instead of ‘according to’ (kata). But the sense is this. The Apostles, he says, did not force Titus, who was uncircumcised, to be circumcised, although this was pointed out by the brethren who were brought in secretly and pressed for circumcision. Indeed he put them in the place of spies because of what is foreign to the truth.
[AD 749] John Damascene on Galatians 2:4
That they might introduce us again, he says, into the slavery of the law. This is why elsewhere he says, Christ purchased us from the curse of the law (Gal. 3:13).
[AD 202] Irenaeus on Galatians 2:5
And again he says, "For an hour we did give place to subjection,

[AD 258] Cyprian on Galatians 2:5
Neither must we prescribe this from custom, but overcome opposite custom by reason. For neither did Peter, whom first the Lord chose, and upon whom He built His Church, when Paul disputed with him afterwards about circumcision, claim anything to himself insolently, nor arrogantly assume anything; so as to say that he held the primacy, and that he ought rather to be obeyed by novices and those lately come. Nor did he despise Paul because he had previously been a persecutor of the Church, but admitted the counsel of truth, and easily yielded to the lawful reason which Paul asserted, furnishing thus an illustration to us both of concord and of patience, that we should not obstinately love our own opinions, but should rather adopt as our own those which at any time are usefully and wholesomely suggested by our brethren and colleagues, if they be true and lawful. Paul, moreover, looking forward to this, and consulting faithfully for concord and peace, has laid down in his epistle this rule: "Moreover, let the prophets speak two or three, and let the rest judge. But if anything be revealed to another that sitteth by, let the first hold his peace." In which place he has taught and shown that many things are revealed to individuals for the better, and that each one ought not obstinately to contend for that which he had once imbibed and held; but if anything has appeared better and more useful, he should gladly embrace it. For we are not overcome when better things are presented to us, but we are instructed, especially in those matters which pertain to the unity of the Church and the truth of our hope and faith; so that we, priests of God and prelates of His Church, by His condescension, should know that remission of sins cannot be given save in the Church, nor can the adversaries of Christ claim to themselves anything belonging to His grace.

[AD 400] Ignatius of Antioch on Galatians 2:5
I have learned that certain of the ministers of Satan have wished to disturb you, some of them asserting that Jesus was born [only ] in appearance, was crucified in appearance, and died in appearance; others that He is not the Son the Creator, and others that He is Himself God over all. Others, again, hold that He is a mere man, and others that this flesh is not to rise again, so that our proper course is to live and partake of a life of pleasure, for that this is the chief good to beings who are in a little while to perish. A swarm of such evils has burst in upon us. But ye have not "given place by subjection to them, no, not for one hour." For ye are the fellow-citizens as well as the disciples of Paul, who "fully preached the Gospel from Jerusalem, and round about unto Illyricum," and bare about "the marks of Christ" in his flesh.

[AD 407] John Chrysostom on Galatians 2:5
Ver. 5. "To whom we gave place in the way of subjection, no, not for an hour."

Observe the force and emphasis of the phrase; he says not, "by argument," but, "by subjection," for their object was not to teach good doctrine, but to subjugate and enslave them. Wherefore, says he, we yielded to the Apostles, but not to these.

Ver. 5. "That the truth of the Gospel might continue with you."

That we may confirm, says he, by our deeds what we have already declared by words — namely, that the "old things are passed away, behold they have become new;" and that "if any man is in Christ he is a new creature;" [2 Corinthians 5:17] and that "if you receive circumcision, Christ will profit you nothing." [Galatians 5:2] In maintaining this truth we gave place not even for an hour. Then, as he was directly met by the conduct of the Apostles, and the reason of their enjoining the rite would probably be asked, he proceeds to solve this objection. This he does with great skill, for he does not give the actual reason, which was, that the Apostles acted by way of condescension and in the use of a scheme, (οἰκονομία) as it were; for otherwise his hearers would have been injured. For those, who are to derive benefit from a scheme should be unacquainted with the design of it; all will be undone, if this appears. Wherefore, he who is to take part in it should know the drift of it; those who are to benefit by it should not. To make my meaning more evident, I will take an example from our present subject. The blessed Paul himself, who meant to abrogate circumcision, when he was about to send Timothy to teach the Jews, first circumcised him and so sent him. This he did, that his hearers might the more readily receive him; he began by circumcising, that in the end he might abolish it. But this reason he imparted to Timothy only, and told it not to the disciples. Had they known that the very purpose of his circumcision was the abolition of the rite, they would never have listened to his preaching, and the whole benefit would have been lost. But now their ignorance was of the greatest use to them, for their idea that his conduct proceeded from a regard to the Law, led them to receive both him and his doctrine with kindness and courtesy, and having gradually received him, and become instructed, they abandoned their old customs. Now this would not have happened had they known his reasons from the first; for they would have turned away from him, and being turned away would not have given him a hearing, and not hearing, would have continued in their former error. To prevent this, he did not disclose his reasons; here too he does not explain the occasion of the scheme, (οἰκονομία,) but shapes his discourse differently; thus:

[AD 407] John Chrysostom on Galatians 2:5
See how noble and emphatic his words are.… For [the false brethren] did not do this in order to teach anything profitable but that they might subject and enslave them. “For this reason,” [he says,] “we yielded to the apostles but not to [the false brethren].”

[AD 458] Theodoret of Cyrus on Galatians 2:5
“Not even for a short while,” [he says,] “would we endure their arrogant opinions, but we preferred the truth of the gospel before all things.” … He says this about those who obeyed the law by custom. For since it was likely that the Galatians would say that even the first of the apostles also kept the law, and the divine apostle knew that they were forced to do this in deference to believers from among the Jews who were still weak, he was caught in the middle. It would have been highly perverse to condemn them, yet he did not wish to reveal their aim, in case he might do harm to the new dispensation. So he steers a middle course. And while he does indeed profess to be angry at what occurred, he is nonetheless not disposed to say anything more about them. So he commits everything to the verdict of God.

[AD 749] John Damascene on Galatians 2:5
Not even for a short while, he says, did we submit to them, i.e. to those who slipped in, so that we might not be found saying one thing about the Gospel and doing another. What, then, did he say about the Gospel? So that if one is in Christ he is a new creation (II Cor. 5:17); And, the old things passed away, behold all things has become new (ibid.); and In freedom Christ has made us free (Gal. 5:1).
[AD 370] Gaius Marius Victorinus on Galatians 2:6
[He means] those who have sprung from those same pseudoapostles but nonetheless “are something,” that is, have undergone change and now follow the gospel. Even if they have sprung from these phonies they are now whole, for that is what it is truly to be something. “It is nothing to me,” he says, “what kind of people they were before, at some past time.” And he adds the reason: God shows no partiality but looks at one’s mental attitude and faith. Whether one be Greek or Jew, whether one was anything, is not what God accepts, but what one is and whether one has received faith and the gospel.

[AD 407] John Chrysostom on Galatians 2:6
Ver. 6. "But from those who were reputed to be somewhat (whatsoever they were, it makes no matter to me, God accepts no man's person.)"

Here he not only does not defend the Apostles, but even presses hard upon those holy men, for the benefit of the weak. His meaning is this: although they permit circumcision, they shall render an account to God, for God will not accept their persons, because they are great and in station. But he does not speak so plainly, but with caution. He says not, if they vitiate their doctrine, and swerve from the appointed rule of their preaching, they shall be judged with the utmost rigor, and suffer punishment; but he alludes to them more reverently, in the words, "of those who were reputed to be somewhat, whatsoever they were." He says not, "whatsoever they 'are,'" but "were," showing that they too had thenceforth ceased so to preach, the doctrine having extended itself universally. The phrase, "whatsoever they were," implies, that if they so preached they should render account, for they had to justify themselves before God, not before men. This he said, not as doubtful or ignorant of the rectitude of their procedure, but (as I said before) from a sense of the expediency of so forming his discourse. Then, that he may not seem to take the opposite side and to accuse them, and so create a suspicion of their disagreement, he straightway subjoins this correction: "for those who were reputed to be somewhat, in conference imparted nothing to me." This is his meaning; What you may say, I know not; this I know well, that the Apostles did not oppose me, but our sentiments conspired and accorded. This appears from his expression, "they gave me the right hand of fellowship;" but he does not say this at present, but only that they neither informed or corrected him on any point, nor added to his knowledge.

Ver. 6. "For those who were reputed to be somewhat, imparted nothing to me:"

That is to say, when told of my proceedings, they added nothing, they corrected nothing, and though aware that the object of my journey was to communicate with them, that I had come by revelation of the Spirit, and that I had Titus with me who was uncircumcised, they neither circumcised him, nor imparted to me any additional knowledge.

[AD 407] John Chrysostom on Galatians 2:6
Here he not only offers no defense of the apostles but is hard on the saints so that he may assist the weaker among them. What he is saying is something like this: “If these men enjoin circumcision, they will give an account to God. For God will not accept their persons because they are great and in authority.” Yet he has not said this openly, but sparingly…. And he does not say “what they are” but what they were, indicating that they also later gave up the preaching of circumcision, once the gospel was manifest everywhere…. It is as though he were saying, “I do not condemn or disparage those saints; for they knew what they were doing, and they will give an account to God.”
[AD 420] Jerome on Galatians 2:6
(Verse 6) But from those who seemed to be something—whatever they were,it makes no difference to me; God shows personal favoritism to no man—for those who seemed to be something added nothing to me. But on the contrary, when they saw that the gospel for the uncircumcised had been committed to me, as the gospel for the circumcised was to Peter (for He who worked effectively in Peter for the apostleship to the circumcised also worked effectively in me toward the Gentiles), and when James, Cephas, and John, who seemed to be pillars, perceived the grace that had been given to me, they gave me and Barnabas the right hand of fellowship, that we should go to the Gentiles and they to the circumcised. They desired only that we should remember the poor, the very thing which I also was eager to do. But when Peter had come to Antioch, I withstood him to his face, because he was to be blamed; for before certain men came from James, he would eat with the Gentiles; but when they came, he withdrew and separated himself, fearing those who were of the circumcision. And the rest of the Jews also played the hypocrite with him, so that even Barnabas was carried away with their hypocrisy. But when I saw that they were not straightforward about the truth of the gospel, I said to Peter before them all, “If you, being a Jew, live in the manner of Gentiles and not as the Jews, why do you compel Gentiles to live as Jews? For God does not show favoritism. He doesn't play favorites. In fact, He has no favorites. It makes no difference who you are or where you're from—if you want God and are ready to do what He says, the door is open. The Message He sent to the children of Israel—that through Jesus Christ everything is being put together again—well, He's doing it everywhere, among everyone. And thus, cautiously and gradually, Peter walks a middle path between praise and rebuke, so that he may defer to his predecessor the apostle, and yet boldly oppose him to his face, compelled by truth.

For those who seemed important, contributed nothing to me. He himself, however, conferred with them earlier and recounted many things to them that he had accomplished among the nations: they contributed nothing to him, but only confirmed what he had said, giving the right hand of fellowship, and they strengthened the gospel of me and of Paul. Again, it must be noted that the word 'conferred' itself is in Greek, which we discussed earlier.

[AD 430] Augustine of Hippo on Galatians 2:6
If people were reputed to be anything, that was a human reputation, for they themselves are not anything to boast of. For even if they are good ministers of God, it is Christ in them, not they through themselves, who are something. For if they were something through themselves they would always be something. “What they were” at one time means that it is nothing to him that they themselves were sinners. God accepts no one because of the office one holds. He calls all to salvation, not imputing their transgressions to them.… No one should suppose that Paul said [this] to disparage his predecessors, for they too, as spiritual people, wished to stand against the carnal people who thought themselves to “be something” on their own rather than out of Christ in them. They were extremely glad when persuaded that they themselves, Paul’s predecessors, like Paul had been justified by the Lord from a state of sin. But carnal people, if anything is said about their previous life, grow angry and take it as disparagement. So they assume that the apostles are of their own mind. Now Peter, James and John were more honored among the apostles because the Lord showed himself on the Mount to these same three as a sign of his kingdom.

[AD 749] John Damascene on Galatians 2:6
He says ‘those who thought of themselves to be’ instead of ‘those who were.’ As he said about himself, I think that I too have the Spirit of God. The sense is this: I do not know, he says, nor do I contest about, the reason, which made those around Peter condescend to circumcision; they know, for they shall have to give an account to God. As for me I know one thing, that when I came, they no longer said anything about the preaching. He was right in saying, “whatever they might be,” for they were not anything, so that he might offer the condescension to the beginning of his preaching and to them.
[AD 384] Ambrosiaster on Galatians 2:7
He names Peter alone because he has received the primacy in the founding of the church; and he himself had likewise been chosen to have the primacy in the founding of Gentile churches, but with the proviso that Peter should preach to the Gentiles, should cause arise, and Paul to the Jews.

[AD 407] John Chrysostom on Galatians 2:7
Ver. 7. "But contrariwise."

Some hold his meaning to be, not only that the Apostles did not instruct him, but that they were instructed by him. But I would not say this, for what could they, each of whom was himself perfectly instructed, have learned from him? He does not therefore intend this by the expression, "contrariwise," but that so far were they from blaming, that they praised him: for praise is the contrary of blame. Some would probably here reply: Why did not the Apostles, if they praised your procedure, as the proper consequence abolish circumcision? Now to assert that they did abolish it Paul considered much too bold, and inconsistent with his own admission. On the other hand, to admit that they had sanctioned circumcision, would necessarily expose him to another objection. For it would be said, if the Apostles praised your preaching, yet sanctioned circumcision, they were inconsistent with themselves. What then is the solution? Is he to say that they acted thus out of condescension to Judaism? To say this would have shaken the very foundation of the economy. Wherefore he leaves the subject in suspense and uncertainty, by the words, "but of those who were reputed to be somewhat; it makes no matter to me." Which is in effect to say, I accuse not, nor traduce those holy men; they know what it is they have done; to God must they render their account. What I am desirous to prove is, that they neither reversed nor corrected my procedure, nor added to it as in their opinion defective, but gave it their approbation and assent; and to this Titus and Barnabas bear witness. Then he adds,

Ver. 7. "When they saw that I had been entrusted with the Gospel of the Uncircumcision even as Peter with the Gospel of the Circumcision ,"—

The Circumcision and Uncircumcision; meaning, not the things themselves, but the nations known by these distinctions; wherefore he adds,

[AD 420] Jerome on Galatians 2:7
This intricate passage, full of intervening matter, might be briefly construed as follows: “Those who were conspicuous added nothing to me, but on the contrary gave the right hand of fellowship to me and Barnabas.” An alternative sense is hidden to avoid boasting of himself: “Those who were conspicuous added nothing to me, but on the contrary I have added to them, and they have become more steadfast in the grace of the gospel.”

[AD 420] Jerome on Galatians 2:7-8
(Vers. 7, 8.) But on the contrary, when they saw that I had been entrusted with the gospel for the uncircumcised, just as Peter had been entrusted with the gospel for the circumcised (for he who worked through Peter for his apostolic ministry to the circumcised worked also through me for mine to the Gentiles), and when James and Cephas and John, who seemed to be pillars, perceived the grace that was given to me, they gave the right hand of fellowship to Barnabas and me, that we should go to the Gentiles and they to the circumcised. Ὑπέρβατον est, et multis quae in medio sunt interjecta sublatis, sic breviter legi potest: Mihi enim qui videbantur esse nihil contulerunt: sed econtra dexteras dederunt mihi et Barnabae, societatis. Aut certe ille absque jactatione sui, occultus est sensus: Mihi qui videbantur esse aliquid, nihil contulerunt; sed econtra a me eis collatum est, dum fiunt in Evangelii gratia firmiores. Totum autem quod dicit, hoc est: unus atque idem mihi Evangelium praeputii, et Petro circumcisionis credidit. He sent me to the Gentiles, and he appointed him in Judea. Neither could the Gentiles, who were no longer young and could not benefit from the pain of circumcision, abstain from the foods they had always been accustomed to and that God had created for them to use; nor could those who believed and were circumcised from the Jews, and who, by custom, thought they had more than the other Gentiles, easily despise the things in which they boasted. Therefore, by the providence of God, one apostle was given to the circumcised, who seemed to acquiesce to the shadows of the Law, while another was given to those who were uncircumcised, who did not consider the grace of the Gospel to be slavery, but rather free faith. Lest any impediment to faith arise under any occasion: and because of circumcision or uncircumcision, one would not believe in Christ. And we do not say this because Peter, who himself also testified that no man is common in the Acts of the Apostles (Acts 10), and is taught in that vessel, which he saw sent from heaven with four corners, that it makes no difference whether someone is a Jew or a Gentile, as if he had forgotten the things that came before, concerning the grace of the Gospel, he considered the Law to be observed. But rather, in order to also pretend to keep the Law himself, gradually leading the Jews away from their ancient way of life. For they could not suddenly and contemptuously cast aside so much labor of observance, and the most careful conduct of their former life, as if it were mere refuse and loss. Hence we may clearly understand why Paul and Barnabas, who were in society with Peter, James, and John, received the right hand of fellowship from them. It was not to prevent the gospel of Christ being thought different among those who hitherto observed various rites, or who held diverse opinions, but to establish a common bond both between those who were circumcised and those who were not. Paul wisely maintained this, when he said, 'For He that wrought effectually in Peter to the apostleship of the circumcision, the same was mighty in me toward the Gentiles; and recognizing the favor conferred upon Peter, he thus explains it, that it might be understood how, in receiving circumcision, he did it in part, in order that he might profit those who had believed in him among the Jews, and keep them in the faith and gospel of Christ.' He also understands that if that person were to act without fault and observe the time when it is not allowed, so as not to lose those entrusted to him, he would have to do more for the truth of the Gospel, namely, what was entrusted to him in secret, so that the nations, discouraged by the burden and difficulty of the Law, would not turn away from the faith and belief in Christ. A hidden question arises here: So what? If Peter were to find [people] from the Gentiles, would he not lead them to the faith? But if Paul had found any from the circumcision, did he not invite them to the baptism of Christ? This is resolved in the following way: that we say that it was commanded for each group, the Jews and the Gentiles, that those who defended the Law would have someone to follow, and those who preferred grace over the Law would have a teacher and guide. But in general, their purpose was to gather the Church of Christ from all the nations. For we read that the Gentile Cornelius was baptized by the holy Peter, and that Paul often preached Christ in the synagogues of the Jews. Peter, John, and James, who seemed to be pillars (Acts X, XIII, XVII). Three times before we have read about the Apostles, but after them were the others who seemed to be something. They made no difference to me, those who seemed important. So I was anxious to know what this meant, those who seemed important, but now he has relieved me of all doubts by adding, who seemed to be pillars. Therefore, the pillars of the Church are the apostles, especially Peter, James, and John, among whom two of them deserve to ascend the mountain with the Lord, one of whom introduces the Savior speaking in the Apocalypse: 'To him who overcomes, I will make him a pillar in the temple of my God' (Rev. 3:12), teaching all believing ones who overcome the adversary that they can become pillars of the Church. Writing to Timothy, Paul says: 'So that you may know how one ought to behave in the household of God, which is the Church of the living God, the pillar and support of the truth' (1 Tim. 3:15). And we are instructed by him and the other apostles, all the believers, and even the Church itself is also called the pillar in the Scriptures. And there is no difference whether it is said about the body or the members, since the body is divided into members and the members are the body. Therefore, Peter, James, and John, who seemed to be pillars, gave the right hand of fellowship to Paul and Barnabas; but Titus, who was with them, did not receive the right hand. For he had not yet reached such a measure, that the merchandises of Christ could be believed to him in equal measure with the elders, and hold the same place of negotiation that Barnabas held, and Paul.

[AD 430] Augustine of Hippo on Galatians 2:7
The apostles were not therefore found to disagree in anything. Otherwise, when Paul claimed to have received the gospel perfectly, they might have denied this and wished to add to his teaching, as though he were incomplete. On the contrary, instead of reproving Paul’s imperfection, they approved his perfection.… His saying “on the contrary” might also be understood in such a way as to yield the following meaning: “Upon me those who had a reputation imposed nothing further. On the contrary, they consented with me and Barnabas, joining the right hand of fellowship, that we, for our part, should go among the Gentiles, who are contrary to the circumcision, while they for their part should go to those of the circumcision.”

[AD 749] John Damascene on Galatians 2:7
The sentence beginning with “But on the contrary, seeing ... etc.,” is summed up by the sentence “They extended to me and Barnabas the right hand of fellowship.” Actually he says what he says in between in order to indicate once again that he was not ordained by men to preach to the nations, as his enemies said concerning him
[AD 202] Irenaeus on Galatians 2:8
With regard to those (the Marcionites) who allege that Paul alone knew the truth, and that to him the mystery was manifested by revelation, let Paul himself convict them, when he says, that one and the same God wrought in Peter for the apostolate of the circumcision, and in himself for the Gentiles.

[AD 407] John Chrysostom on Galatians 2:8
Ver. 8. "For He that wrought for Peter unto the Apostleship of the Circumcision wrought for me also unto the Gentiles."

He calls the Gentiles the Uncircumcision and the Jews the Circumcision, and declares his own rank to be equal to that of the Apostles; and, by comparing himself with their Leader not with the others, he shows that the dignity of each was the same. After he had established the proof of their unanimity, he takes courage, and proceeds confidently in his argument, not stopping at the Apostles, but advances to Christ Himself, and to the grace which He had conferred upon him, and calls the Apostles as his witnesses, saying,

[AD 420] Jerome on Galatians 2:8
Paul allows that Peter, following Jewish custom, was without blame in his temporary observation of what was amiss so as not to lose those entrusted to him. But it was Paul’s own duty for the sake of the gospel truth to do what was entrusted to him among the uncircumcised, so that the Gentiles would not depart from their faith and belief in Christ through fear of the burdens and rigor of the law.

[AD 220] Tertullian on Galatians 2:9
Now they certainly would not have been surprised at his having become a preacher instead of a persecutor, if his preaching were of something contrary; nor, moreover, would they have "glorified the Lord," because Paul had presented himself as an adversary to Him They accordingly even gave him "the right hand of fellowship," as a sign of their agreement with him, and arranged amongst themselves a distribution of office, not a diversity of gospel, so that they should severally preach not a different gospel, but (the same), to different persons, Peter to the circumcision, Paul to the Gentiles.

[AD 220] Tertullian on Galatians 2:9
Accordingly, the false brethren who were the spies of their Christian liberty must be thwarted in their efforts to bring it under the yoke of their own Judaism before that Paul discovered whether his labour had been in vain, before that those who preceded him in the apostolate gave him their right hands of fellowship, before that he entered on the office of preaching to the Gentiles, according to their arrangement with him. He therefore made some concession, as was necessary, for a time; and this was the reason why he had Timothy circumcised, and the Nazarites introduced into the temple, which incidents are described in the Acts.

[AD 220] Tertullian on Galatians 2:9
Rightly, then, did Peter and James and John give their right hand of fellowship to Paul, and agree on such a division of their work, as that Paul should go to the heathen, and themselves to the circumcision. Their agreement, also, "to remember the poor" was in complete conformity with the law of the Creator, which cherished the poor and needy, as has been shown in our observations on your Gospel.

[AD 311] Methodius of Olympus on Galatians 2:9
Since then the children have invited us, and have given unto us the right hand of fellowship,

[AD 370] Gaius Marius Victorinus on Galatians 2:9
That is, those who supported the church were like pillars supporting roofs and other things. “These men, then,” he says, “being of such quality and so great, gave me their right hands, that is, joined in friendship, peace and steadfastness and declared that they had only one gospel. In view of this accord, Galatians, you are sinning and follow neither my gospel nor that of Peter, James and John, who are the pillars of the church, when you add things that are not approved by any of them.”

[AD 370] Gaius Marius Victorinus on Galatians 2:9
“Not to me alone,” [he says], “did they give the right hand of fellowship, but also to Barnabas who was my companion.” He made the addition so that it should not appear that he alone had received the trust.

[AD 384] Ambrosiaster on Galatians 2:9
Just as he allots to Peter companions who were the outstanding men among the apostles, so he joins to himself Barnabas, who was associated with him by God’s appointment. Yet he claims that the grace of his primacy was entrusted to him alone by God, just as the primacy among the apostles was entrusted solely to Peter.

[AD 395] Gregory of Nyssa on Galatians 2:9
Since we must also ascertain how it is possible to become a “pillar,” so that we too may become worthy of this calling, we ought to hear this again from the dictum of the apostle Paul, who says that the pillar is “the foundation of truth.”

[AD 407] John Chrysostom on Galatians 2:9
Ver. 9. "And when they perceived the grace that was given unto me, James and Cephas and John, they who were reputed to be pillars, gave to me and Barnabas the right hands of fellowship."

He says not when they "heard," but when they "perceived," that is, were assured by the facts themselves, "they gave to me and Barnabas the right hands of fellowship." Observe how he gradually proves that his doctrine was ratified both by Christ and by the Apostles. For grace would neither have been implanted, nor been operative in him, had not his preaching been approved by Christ. Where it was for the purpose of comparison with himself, he mentioned Peter alone; here, when he calls them as witnesses, he names the three together, "Cephas, James, John," and with an encomium, "who were reputed to be pillars." Here again the expression "who were reputed" does not impugn the reality of the fact, but adopts the estimate of others, and implies that these great and distinguished men, whose fame was universal, bore witness that his preaching was ratified by Christ, that they were practically informed and convinced by experience concerning it. "Therefore they gave the right hands of fellowship" to me, and not to me only, but also to Barnabas, "that we should go unto the Gentiles, and they unto the Circumcision." Here indeed is exceeding prudence as well as an incontrovertible proof of their concord. For it shows that his and their doctrine was interchangeable, and that both approved the same thing, that they should so preach to the Jews, and he to the Gentiles. Wherefore he adds,

Ver. 9. "That we should go unto the Gentiles and they unto the Circumcision."

Observe that here also he means by "the Circumcision," not the rite, but the Jews; whenever he speaks of the rite, and wishes to contrast it, he adds the word "uncircumcision;" as when he says, "For circumcision indeed profits, if you be a doer of the law; but if you be a transgressor of the law, your circumcision has become uncircumcision." [Romans 2:25] And again, "Neither circumcision avails any thing, nor uncircumcision." But when it is to the Jews and not to the deed that he gives this name, and wishes to signify the nation, he opposes to it not uncircumcision in its literal sense, but the Gentiles. For the Jews are the contradistinction to the Gentiles, the Circumcision to the Uncircumcision. Thus when he says above, "For He that wrought for Peter into the Apostleship of the Circumcision, wrought for me also unto the Gentiles;" and again, "We unto the Gentiles and they unto the Circumcision," he means not the rite itself, but the Jewish nation, thus distinguishing them from the Gentiles.

[AD 420] Jerome on Galatians 2:9
Three times above we read that the apostles were “reputed.” … And so I was wondering what this word meant. Now he has delivered me from all doubt when he describes them as those “who appeared to be pillars.” Therefore it means the apostles, and above all Peter, James and John, two of whom were deemed fit to go up the Mount with Jesus. One of these introduces the Savior in the Apocalypse saying “He who has overcome I shall make him a pillar in the temple of my God.” This teaches us that all believers who have overcome the enemy can become pillars of the church.

[AD 458] Theodoret of Cyrus on Galatians 2:9
They knew this from the facts; for [he says] “just as divine grace worked with Peter for the preaching to the Jews, so it collaborated with me for the salvation of the Gentiles.”

[AD 220] Tertullian on Galatians 2:10
Their agreement, also, "to remember the poor" was in complete conformity with the law of the Creator, which cherished the poor and needy, as has been shown in our observations on your Gospel.

[AD 370] Gaius Marius Victorinus on Galatians 2:10
When Paul and Barnabas were having these discussions with John and Peter and James, the gospel was accepted and established in the way that Paul describes. The only thing that they did not hear willingly in this dispute was that works were not part of salvation. Their sole injunction, however, was that they should be mindful of the poor. Thus they agree on this point also, that the hope of salvation does not reside in the activity of doing works for the poor, but they simply enjoin—what?—that we be mindful of the poor. Not that we should spend all our efforts on it but that we should share with those who have not what we are able to have. We are instructed simply that we should be mindful of the poor, not that we should place our care and thought upon our own capacity to hold on to our salvation by this means. Thus he is almost corrected and admonished in this matter, but this is not all Paul says. “That we should be mindful,” he says, not “that we should do this” but “that we should keep them in mind,” which is less than putting our work into this and fulfilling this alone. He adds that he took thought even for this matter outside the gospel that he preached, which consisted in being mindful of the poor and bestowing whatever he could upon them. In truth, indeed, no one is poor if, simply keeping faith and trusting in God, he awaits the riches of his salvation.

[AD 407] John Chrysostom on Galatians 2:10
Ver. 10. "Only they would that we should remember the poor; which very thing I was also zealous to do."

This is his meaning: In our preaching we divided the world between us, I took the Gentiles and they the Jews, according to the Divine decree; but to the sustenance of the poor among the Jews I also contributed my share, which, had there been any dissension between us, they would not have accepted. Next, who were these poor persons? Many of the believing Jews in Palestine had been deprived of all their goods, and scattered over the world, as he mentions in the Epistle to the Hebrews , "For you took joyfully the spoiling of your possessions;" and in writing to the Thessalonians, [1 Thessalonians 2:14] he extols their fortitude, "You became imitators of the Churches of God which are in Judæa,...for you also suffered the same thing of your own countrymen, even as they did of the Jews." And he shows throughout that those Greeks who believed were not under persecution from the rest, such as the believing Jews were suffering from their own kindred, for there is no nation of a temper so cruel. Wherefore he exercises much zeal, as appears in the Epistles to the Romans [Romans 15:25-27] and Corinthians [1 Corinthians 16:1-3] that these persons should meet with much attention; and Paul not only collects money for them, but himself conveys it, as he says, "But now I go unto Jerusalem ministering unto the saints," [Romans 15:25] for they were without the necessaries of life. And he here shows that in this instance having resolved to assist them, he had undertaken and would not abandon it.

Having by these means declared the unanimity and harmony between the Apostles and himself, he is obliged to proceed to mention his debate with Peter at Antioch.

[AD 407] John Chrysostom on Galatians 2:10
Many believers of Jewish origin in Palestine had been robbed of all their goods and were being persecuted on all sides.… Those who had been converted from Greek backgrounds did not suffer such antagonism from those who had remained Greek as much as the believers of Jewish origin had suffered from their own people. Therefore he takes great pains that they should receive all assistance, as also when writing to the Romans and Corinthians.

[AD 420] Jerome on Galatians 2:10
The holy poor, care of whom was specially committed to Paul and Barnabas by the apostles, are those believers in Judea who brought the price of their possessions to the feet of the apostles to be given to the needy, or because they were incurring hatred and punishment from their kin, family and parents as deserters of the law and believers in a crucified man. How much labor the holy apostle expended in ministering to these his letters bear witness, as he wrote to Corinth, the Thessalonians and all the churches of the Gentiles that they should prepare this offering to be taken to Jerusalem through himself or others. For this reason he now says confidently “which very thing I have been careful to do.”

[AD 420] Jerome on Galatians 2:10
(Verse 10.) So that we might be mindful of the poor, I was also concerned to do this very thing. The holy poor, to whom the care is especially entrusted by the apostles Paul and Barnabas, are those who, as Jewish believers, were bringing the prices of their possessions to be given to the needy at the feet of the apostles, either because they were renouncing the Law, their fellow Jews, and their kinsmen, or because they were being considered as traitors and sacrilegious for believing in the crucified man. Of this ministry, the holy apostle Paul worked with great effort, as his Epistles testify, writing to the Corinthians and the Thessalonians, and to all the churches of the Gentiles, to prepare this gift to be carried to Jerusalem by himself or by those who pleased him. Therefore, he confidently says now that he was also eager to do this very thing. However, the poor can also be received in another way, about whom it is said in the Gospel: Blessed are the poor in spirit, for theirs is the kingdom of heaven (Matthew 5:3). They truly deserve to be remembered, these apostles. And also those poor ones, about whom it is written in Solomon: The redemption of a man's soul, his own wealth (Prov. XIII, 8). But the poor cannot endure a threat. For he cannot hear the terror of future punishments, poor in faith, poor in grace, lacking spiritual riches, nor knowledge of the Scriptures, which are valued as gold and silver and precious stones. Therefore, since the healthy do not need a doctor, but those who are sick, it is fitting for the apostles, too, to gather in the sharing of hands, so that they would not reject the poor or despise sinners; but always remember them, just as Paul remembers that person in Corinth, whom he had saddened for a time in his previous letter, so that, as the body labors through penance, the spirit would be saved (1 Cor. 5); in the second letter, so that he would not be consumed by greater sadness, he called him back to the Church. And he asked everyone to confirm their love for him and to give to their brother as he had given to each of them, fulfilling the covenant he had made in Jerusalem to always remember the poor.

[AD 749] John Damascene on Galatians 2:10
The circumstances, he says, were such, that they were to preach to the Jews and we, to the nations. But the care for the poor became a matter common to both of them. These poor were those from the Jews who believed in Christ and who had been deprived of their own homes by the Jews; They were those to whom he wrote, For you accepted joyfully the seizure of your property (Hebr. 10:34).
[AD 400] Pseudo-Clement on Galatians 2:11
For in direct opposition to me, who am a firm rock, the foundation of the Church, you now stand. If you were not opposed to me, you would not accuse me, and revile the truth proclaimed by me, in order that I may not be believed when I state what I myself have heard with my own ears from the Lord, as if I were evidently a person that was condemned and in bad repute. But if you say that I am condemned, you bring an accusation against God, who revealed the Christ to me, and you inveigh against Him who pronounced me blessed on account of the revelation. But if, indeed, you really wish to work in the cause of truth, learn first of all from us what we have learned from Him, and, becoming a disciple of the truth, become a fellow-worker with us."

[AD 407] John Chrysostom on Galatians 2:11
Many of those who read this passage of the letter superficially believe that Paul rebuked the hypocrisy of Peter. But it is not so—it is not so, far from it! For we shall find that there was here a deep though hidden understanding between Paul and Peter for the good of those who listen. … How could one who risked his life before such a multitude have ever played the hypocrite? … Paul does not now say this to condemn Peter, but in the same spirit as when he said those who are “reputed to be something,” he now says this too…. The apostles, as I said before, consented to circumcision in Jerusalem, because it was not possible to tear them away from the law all at once. But when they came to Antioch they did not henceforth observe anything of the kind but lived indifferently with believers of Gentile origin. Peter also did this. But when people came from Judea and saw him preaching there in this way, he gave up this practice, fearing to disturb them, and changed his ways. He had a twofold purpose, to avoid scandalizing the Jews and to give Paul a plausible reason to confront him. For if Peter himself, having included circumcision in his preaching in Jerusalem, had changed in Antioch, those of Jewish origin would have surmised that he did this from fear of Paul, and his disciples would have condemned his excessive complacence…. And so Paul rebukes and Peter voluntarily gives way. It is like the master who when upbraided keeps silent, so that his disciples might more easily change their ways.
[AD 407] John Chrysostom on Galatians 2:11-12
Ver. 11, 12. "But when Cephas came to Antioch, I resisted him to the face, because he stood condemned. For before that certain came from James, he did eat with the Gentiles: but when they came, he drew back and separated himself, fearing them that were of the circumcision."

Many, on a superficial reading of this part of the Epistle, suppose that Paul accused Peter of hypocrisy. But this is not so, indeed it is not, far from it; we shall discover great wisdom, both of Paul and Peter, concealed herein for the benefit of their hearers. But first a word must be said about Peter's freedom in speech, and how it was ever his way to outstrip the other disciples. Indeed it was upon one such occasion that he gained his name from the unbending and impregnable character of his faith. For when all were interrogated in common, he stepped before the others and answered, "You are the Christ, the Son of the living God." [Matthew 16:16] This was when the keys of heaven were committed to him. So too, he appears to have been the only speaker on the Mount; [Matthew 17:4] and when Christ spoke of His crucifixion, and the others kept silence, he said, "Be it far from You." [Matthew 16:22] These words evince, if not a cautious temper, at least a fervent love; and in all instances we find him more vehement than the others, and rushing forward into danger. So when Christ was seen on the beach, and the others were pushing the boat in, he was too impatient to wait for its coming to land. [John 21:7] And after the Resurrection, when the Jews were murderous and maddened, and sought to tear the Apostles in pieces, he first dared to come forward, and to declare, that the Crucified was taken up into heaven. [Acts 2:14, 36] It is a greater thing to open a closed door, and to commence an action, than to be free-spoken afterwards. How could he ever dissemble who had exposed his life to such a populace? He who when scourged and bound would not bate a jot of his courage, and this at the beginning of his mission, and in the heart of the chief city where there was so much danger — how could he, long afterwards in Antioch, where no danger was at hand, and his character had received lustre from the testimony of his actions, feel any apprehension of the believing Jews? How could he, I say, who at the very first and in their chief city feared not the Jews while Jews, after a long time and in a foreign city, fear those of them who had been converted? Paul therefore does not speak this against Peter, but with the same meaning in which he said, "for they who were reputed to be somewhat, whatsoever they were, it makes no matter to me." But to remove any doubt on this point, we must unfold the reason of these expressions.

The Apostles, as I said before, permitted circumcision at Jerusalem, an abrupt severance from the law not being practicable; but when they come to Antioch, they no longer continued this observance, but lived indiscriminately with the believing Gentiles which thing Peter also was at that time doing. But when some came from Jerusalem who had heard the doctrine he delivered there, he no longer did so fearing to perplex them, but he changed his course, with two objects secretly in view, both to avoid offending those Jews, and to give Paul a reasonable pretext for rebuking him. For had he, having allowed circumcision when preaching at Jerusalem, changed his course at Antioch, his conduct would have appeared to those Jews to proceed from fear of Paul, and his disciples would have condemned his excess of pliancy. And this would have created no small offense; but in Paul, who was well acquainted with all the facts, his withdrawal would have raised no such suspicion, as knowing the intention with which he acted. Wherefore Paul rebukes, and Peter submits, that when the master is blamed, yet keeps silence, the disciples may more readily come over. Without this occurrence Paul's exhortation would have had little effect, but the occasion hereby afforded of delivering a severe reproof, impressed Peter's disciples with a more lively fear. Had Peter disputed Paul's sentence, he might justly have been blamed as upsetting the plan, but now that the one reproves and the other keeps silence, the Jewish party are filled with serious alarm; and this is why he used Peter so severely. Observe too Paul's careful choice of expressions, whereby he points out to the discerning, that he uses them in pursuance of the plan, (οἰκονομίας]) and not from anger.

His words are, "When Cephas came to Antioch, I resisted him to the face, because he stood condemned;" that is, not by me but by others; had he himself condemned him, he would not have shrunk from saying so. And the words, "I resisted him to the face," imply a scheme for had their discussion been real, they would not have rebuked each other in the presence of the disciples, for it would have been a great stumblingblock to them. But now this apparent contest was much to their advantage; as Paul had yielded to the Apostles at Jerusalem, so in turn they yield to him at Antioch. The cause of censure is this, "For before that certain came from James," who was the teacher at Jerusalem, "he did eat with the Gentiles, but when they came he drew back and separated himself, fearing them that were of the Circumcision:" his cause of fear was not his own danger, (for if he feared not in the beginning, much less would he do so then,) but their defection. As Paul himself says to the Galatians, "I am afraid of you, lest by any means I have bestowed labor upon you in vain:" [Galatians 4:11] and again, "I fear lest by any means as the serpent beguiled Eve,...so your minds should be corrupted." [2 Corinthians 11:3] Thus the fear of death they knew not, but the fear lest their disciples should perish, agitated their inmost soul.

[AD 420] Jerome on Galatians 2:11
It is not that Peter and Cephas signify different things, but what we would call in Latin and Greek petra (“stone”) the Hebrews and Syrians both, because of the affinity of their languages, call cephas.… Nor is it surprising that Luke was silent on this matter, when there are many other things that Paul claims to have suffered which Luke omits with the freedom of a historian.

[AD 420] Jerome on Galatians 2:11-13
(Verse 11 onwards) But when Peter came to Antioch, I opposed him to his face, because he stood condemned. For before certain men came from James, he was eating with the Gentiles. But when they came, he withdrew and separated himself, fearing those of the circumcision. And the rest of the Jews acted hypocritically along with him, so that even Barnabas was led astray by their hypocrisy. When I saw that they were not walking straight, according to the truth of the gospel, I said to Peter in the presence of all, 'If you, who are a Jew, live like the Gentiles and not like the Jews, how can you compel the Gentiles to live like Jews?' We are Jews by nature, and not Gentile sinners, but we know that a person is not justified by the works of the law, but through faith in Jesus Christ. Therefore, when the apostle Paul saw that the grace of Christ was in danger, he employed a new battle tactic of the old warrior, to correct the dispensation of Peter, by which he desired the salvation of the Jews, with a new dispensation of contradiction, and to resist him to his face. Not arguing against his intention, but rather publicly contradicting him, so that by Paul's argument and resistance, those who had believed from the Gentiles would be saved. Now if anyone thinks that Paul truly resisted the apostle Peter and boldly did wrong to his predecessor for the sake of the truth of the Gospel, that person's argument will not stand. For even Paul became a Jew to the Jews in order to gain the Jews, and he will be held guilty of the same hypocrisy when he shaved his head in Cenchreae and offered a sacrifice in Jerusalem (Acts 18), and when he circumcised Timothy (Ibid., 16), and practiced foot-washing, which are clearly ceremonial practices of the Jews. Therefore, if the one who was sent to preach to the Gentiles did not think it necessary to say: 'Be without offense to the Jews and to the Church of God' (1 Corinthians 10:32); how can I please everyone in all things, not seeking my own profit, but the profit of many, so that they may be saved? And he did certain things that were contrary to the freedom of the Gospel, so as not to scandalize the Jews. With what authority, with what audacity does he dare to reprehend this in Peter, who was an apostle of the circumcision, when he himself, the apostle of the Gentiles, is accused of committing the same? But as we have already said, he yielded to the public opinion, to Peter and the rest, so that the hypocrisy of observing the Law, which was harming those who had believed from the Gentiles, would be corrected by the hypocrisy of correction, and both peoples would be saved, both those who praise circumcision follow Peter; and those who do not want to be circumcised, preach Paul's freedom. But what he said was blameworthy, therefore he moderated the fasting; so that we understand that he was not so blameworthy to Paul, as he separated himself from those brothers with whom he had eaten before. But a useful simulation, and one to be adopted in time, let us teach an example of King Jehu of Israel, who could not kill the priests of Baal unless he pretended to want to worship the idol, saying: 'Gather (or 'gather together') for me all the priests of Baal: for if Ahab served Baal in few things, I will serve him in many.' (4 Kings 10:18). And David, when he changed his appearance before Abimelech, and who dismissed him and went away. (1 Kings 21) And it is not surprising, even though righteous men, nevertheless, pretend for a time, for their own and others’ salvation, when our Lord Himself, not having sin nor the flesh of sin, assumed the pretense of sinful flesh, so that, condemning sin in the flesh, He would make us the righteousness of God in Himself. Certainly, Paul had read in the Gospel the Lord commanding: But if your brother sins against you, go and correct him between you and him alone. If your brother sins against you, rebuke him; and if he repents, forgive him. (Luke 17:3) And in what way, when he even commanded this to be done to the least of the brothers, did he dare to rebuke the greatest of the apostles so boldly and steadfastly in public; unless it had pleased Peter to be rebuked in this way, and Paul had not done him any harm, about whom he had said before: I went to Jerusalem to see Peter, and I stayed with him for fifteen days: but I saw none of the other apostles. And again: For he who worked in Peter for the apostleship of the circumcision. And below: Peter and James and John, who seemed to be pillars, and the others whom he praises in his praises. Many times, when I was a young man in Rome, I would engage in debates on fictitious lawsuits and exercise myself in true competitions. I would run to the courts of the judges, and I would see the most eloquent orators contending with each other with such bitterness that they would often neglect their duties and turn to personal insults, biting each other with jokes. If they do this, so that they may not incur any suspicion of prevarication, and deceive the surrounding people, what do we think the great pillars of the Church, Peter and Paul, and the vessels of wisdom, ought to have done among the dissenting Jews and Gentiles? Unless it was for the purpose of making their pretended contention the peace of the believers, and the faith of the Church might be established by a holy dispute among them. There are some who think that Cephas, whom Paul writes that he confronted to his face, is not the apostle Peter, but another one of the seventy disciples called by that name. They say that Peter could not have avoided the company of the Gentiles, as he had also baptized the centurion Cornelius. And when he went up to Jerusalem, those who were of the circumcision argued against him, saying: Why did you go to men uncircumcised and eat with them? After recounting the vision, he concluded his response with these words: Therefore, if God gave them the same gift as he gave us when we believed in the Lord Jesus Christ, who was I to hinder God? When they heard this, they fell silent and glorified God, saying, 'So then, even to the Gentiles God has granted repentance unto life.' Especially since the writer of the history, Luke, makes no mention of this disagreement; nor does he ever say that Peter was in Antioch with Paul, and that Porphyry was blaspheming; but if it is believed that Peter erred or that Paul insolently refuted the chief of the apostles, first it must be answered that we do not know the name of some other Cephas, unless it is the one who is called both Cephas and Peter in the Gospel, in Paul's other Epistles, and also in this very passage. Not that Peter signifies one thing and Cephas another, but that as we call the rock in Latin and Greek, so the Hebrews and Syrians, because of the similarity of their languages, name it Cephas. Moreover, the entire argument of the epistle, which is indirectly mentioned concerning Peter, James, and John, contradicts this interpretation. It is not surprising that Luke has remained silent on this matter, considering that he has omitted many other things that Paul claims to have endured, by the liberty of a historian, and it is not necessarily contradictory if one deemed worthy of recounting what another left out among other things for a different reason. Lastly, we have learned that Peter was the first bishop of the Church of Antioch, and then transferred to Rome, which Luke completely omitted. Finally, if we are to create another person called Cephas because of Porphyry's blasphemy, so that Peter is not thought to have erred, countless divine Scriptures will have to be erased, which he condemns because he does not understand. But also against Porphyry, we will fight in another way if Christ commands it: now let us continue with the rest.

[AD 749] John Damascene on Galatians 2:11
When he was resident in Jerusalem, Peter condescended to Judaism, not prohibiting circumcision, nor the Sabbaths. When he came down to Antioch, however, he ate with those from the nations who had believed in the Lord without - any discrimination. Then, when certain people came down from Jerusalem, he was afraid in case he scandalized them and separated himself from those with whom he previously used to eat. But Paul made some sort of economy with him, when he rebuked him in front of everyone for demanding from the nations to Judaize; inasmuch as he intended that by seeing the teacher hearing this rebuke and remaining silent, they might learn that they should not keep the Jewish customs. The whole case was one of economy, based on the prudence of both and intended for the benefit of the disciples, so that even if Peter is said to have behaved as a hypocrite, and not to have been upright, this is understood to have been said for the benefit of the disciples, and on account of the economy.
[AD 202] Irenaeus on Galatians 2:12
But they themselves, while knowing the same God, continued in the ancient observances; so that even Peter, fearing also lest he might incur their reproof, although formerly eating with the Gentiles, because of the vision, and of the Spirit who had rested upon them, yet, when certain persons came from James, withdrew himself, and did not eat with them. And Paul said that Barnabas likewise did the same thing.

[AD 220] Tertullian on Galatians 2:12
Paul, however, censures Peter for not walking straightforwardly according to the truth of the gospel. No doubt he blames him; but it was solely because of his inconsistency in the matter of "eating," which he varied according to the sort of persons (whom he associated with) "fearing them which were of the circumcision," but not on account of any perverse opinion touching another god.

[AD 220] Tertullian on Galatians 2:12
No doubt he blames him; but it was solely because of his inconsistency in the matter of "eating," which he varied according to the sort of persons (whom he associated with) "fearing them which were of the circumcision," but not on account of any perverse opinion touching another god.

[AD 370] Gaius Marius Victorinus on Galatians 2:12
Perhaps indeed he would at this point have kept silent about the sin that he says he reproved in Peter, for it was enough that Peter had been corrected by popular reproof and Paul’s open accusation. But it is profitable and extremely requisite for this letter. He has two reasons for relating the incident. First, his own gospel was not reproved, and he himself, when he reproved Peter, heard no reproof from Peter. Next, this too, as I said, was extremely pertinent: it is because the Galatians thought that they needed to add to the principles of the gospel to obtain life … that this letter is being written to them. Hence it is very good to tell the story, because it is this very fault that was reproved by Paul in Peter and by the people also. In this way it follows that the Galatians too are sinning.

[AD 370] Gaius Marius Victorinus on Galatians 2:12
But in what way was Peter sinning? He had not adopted this ruse to bring in the Jews, meeting them on their own terms (which Paul himself had done and glories in having done, meeting the Jews on their own terms but for their profit). Rather, the sin of Peter lay in the fact that he withdrew, through fear of those who were of the circumcision.

[AD 407] John Chrysostom on Galatians 2:12
He was not afraid of his own endangerment; for one who had no fear at the beginning would have all the less at that time. Rather, he feared their apostasy. Just as Paul himself says to the Galatians, “I am afraid I have labored over you in vain.”

[AD 458] Theodoret of Cyrus on Galatians 2:12
While active in Judea the holy apostles were forced to live according to the law on account of the weakness of the believers from Jewish backgrounds, for they held fast to the regulations of the law. But when they shifted to the cities of the Gentiles they had no need of such an accommodation but lived according to the freedom of the gospel. This is what the godly Peter did when he arrived in Antioch. He ate freely with the Gentiles. But when some of the Jews came he separated from the Gentiles, so that he might not give those who came from the Jews any pretext for doing harm. This is the meaning of “fearing those of the circumcision.” For he who did not fear the whole host of the Jews did not succumb to fear of men, but he did not wish to furnish them with a pretext for scandal.

[AD 749] John Damascene on Galatians 2:12
From those who came down from Jerusalem. “Because he was afraid of those from the circumcision.” In other words, that he might not scandalize them, and might not suffer anything terrible on their account.
[AD 220] Tertullian on Galatians 2:13
Well, but Marcion, finding the Epistle of Paul to the Galatians (wherein he rebukes even apostles ) for "not walking uprightly according to the truth of the gospel," as well as accuses certain false apostles of perverting the gospel of Christ), labours very hard to destroy the character of those Gospels which are published as genuine and under the name of apostles, in order, forsooth, to secure for his own Gospel the credit which he takes away from them.

[AD 370] Gaius Marius Victorinus on Galatians 2:13
What then should we understand by “their insincerity”? Even Peter and Barnabas and the other Jews had not truly gone to the length of living their lives according to Jewish practice. They even pretended to do so as an ad hoc measure, because of the fears of those around them. And therefore, he says, even Barnabas acquiesced in their insincerity.

[AD 407] John Chrysostom on Galatians 2:13
Ver. 13. "Insomuch that even Barnabas was carried away with their dissimulation."

Be not surprised at his giving this proceeding the name of dissimulation, for he is unwilling, as I said before, to disclose the true state of the case, in order to the correction of his disciples. On account of their vehement attachment to the Law, he calls the present proceeding "dissimulation," and severely rebukes it, in order effectually to eradicate their prejudice. And Peter too, hearing this joins in the feint, as if he had erred, that they might be corrected by means of the rebuke administered to him. Had Paul reproved these Jews, they would have spurned at it with indignation, for they held him in slight esteem; but now, when they saw their Teacher silent under rebuke, they were unable to despise or resist Paul's sentence.

[AD 430] Augustine of Hippo on Galatians 2:13
Paul never fell into any pretense, for he everywhere observed a principle which seemed fitting both to Gentile and to Jewish churches, that he should nowhere take away a custom whose observation did not prevent the receiving of God’s kingdom.… Peter, however, when he came to Antioch, was rebuked by Paul not because he observed the Jewish custom in which he was born and reared, although he did not observe it among the Gentiles, but because he wanted to impose it on the Gentiles. This happened after seeing certain persons come from James—that is, from Judea, since James was the head of the church in Jerusalem. It was therefore in fear of those who still thought that salvation resided in these observances that Peter separated himself from the Gentiles and pretended to consent in imposing those burdens of servitude on the Gentiles.

[AD 749] John Damascene on Galatians 2:13
By hypocrisy he means the observation of the Law, and he teaches that they should be separated from it.
[AD 407] John Chrysostom on Galatians 2:14
Ver. 14. "But when I saw that they walked not uprightly according to the truth of the Gospel."

Neither let this phrase disturb you, for in using it he does not condemn Peter, but so expresses himself for the benefit of those who were to be reformed by the reproof of Peter.

Ver. 14. "I said to Cephas before them all."

Observe his mode of correcting the others; he speaks "before them all," that the hearers might be alarmed thereby. And this is what he says —

Ver. 14. "If you, being a Jew, livest as do the Gentiles, and not as do the Jews, how do you compel the Gentiles to live as do the Jews?"

But it was the Jews and not the Gentiles who were carried away together with Peter; why then does Paul impute what was not done, instead of directing his remarks, not against the Gentiles, but against the dissembling Jews? And why does he accuse Peter alone, when the rest also dissembled together with him? Let us consider the terms of his charge; "If you, being a Jew, livest as do the Gentiles, and not as do the Jews, how do you compel the Gentiles to live as do the Jews?" for in fact Peter alone had withdrawn himself. His object then is to remove suspicion from his rebuke; had he blamed Peter for observing the Law, the Jews would have censured him for his boldness towards their Teacher. But now arraigning him in behalf of his own peculiar disciples, I mean the Gentiles, he facilitates thereby the reception of what he has to say which he also does by abstaining from reproof of the others, and addressing it all to the Apostle. "If you," he says, "being a Jew, livest as do the Gentiles, and not as do the Jews;" which almost amounts to an explicit exhortation to imitate their Teacher, who, himself a Jew, lived after the manner of the Gentiles. This however he says not, for they could not have received such advice, but under color of reproving him in behalf of the Gentiles, he discloses Peter's real sentiments. On the other hand, if he had said, Wherefore do you compel these Jews to Judaize? His language would have been too severe. But now he effects their correction by appearing to espouse the part, not of the Jewish, but of the Gentile, disciples; for rebukes, which are moderately severe, secure the readiest reception. And none of the Gentiles could object to Paul that he took up the defense of the Jews. The whole difficulty was removed by Peter's submitting in silence to the imputation of dissimulation, in order that he might deliver the Jews from its reality. At first Paul directs his argument to the character which Peter wore, "If you, being a Jew:" but he generalizes as he goes on, and includes himself in the phrase,

[AD 407] John Chrysostom on Galatians 2:14
I said unto Cephas before them all.

Observe his mode of correcting the others; he speaks before them all, that the hearers might be alarmed thereby.
[AD 407] John Chrysostom on Galatians 2:14
What is Paul’s design? To preempt suspicion in his reproach. For if Paul had said, “You do wrong in observing the law,” those from Judea would have reproached him, as one who insulted the teacher. But now, rebuking Peter on account of his own disciples—those of Gentile origin I mean—Paul makes his argument palatable. And not in this way only, but by declining to reproach everyone and making the whole reproof fall on the apostle [Peter] alone.

[AD 420] Jerome on Galatians 2:14
(Verse 14.) But when I saw that they were not walking straight towards the truth of the Gospel, I said to Peter in front of everyone. Just as those who pretend to limp with healthy steps do not have a fault in their feet, but there is some reason why they limp, so Peter, knowing that circumcision and uncircumcision mean nothing, but the observance of God's commandments does, used to eat with the Gentiles, but for a time he withdrew from them, lest he should make the Jews lose faith in Christ. And so Paul, using the same tactic as Peter had pretended, confronted him to his face and spoke openly in front of everyone; not so much to accuse Peter, but rather to correct those for whose sake Peter had pretended, or even to remove pride from the Jews and despair from the Gentiles. But if someone does not like this interpretation, in which neither Peter is shown to have sinned nor Paul to have boldly accused him, they must explain in what way Paul criticizes this in the other case, which he himself committed.


If you, being a Jew, live as a Gentile and not as a Jew, how do you force the Gentiles to live as Jews? Peter is strongly convinced by an unbreakable argument, or rather, through Peter, those who were compelling him to engage in disputes: If, Peter, you being a Jew by nature, born a Jew and observing all the precepts of the Law, now know that these things have no inherent usefulness but are examples and images of things to come, and if you, eating with those who are from the Gentiles, do not live in a superstitious manner as you did before, but now live freely and impartially; how then can you compel those who believed from the Gentiles to Judaize, now separating yourself from them and considering them unclean? For if those from whom you separate are unclean, and yet you do separate, it follows that you compel them to be circumcised and become Jews; while you yourself, being born a Jew, live like a Gentile. And he joyfully shows the reason why he disputed against him: namely, because he was compelling the Gentiles to judaize through his own hypocrisy, as they desired to imitate him.

[AD 430] Augustine of Hippo on Galatians 2:14
Those who wish to defend Peter from error and from the depravity of life into which he had fallen overturn the very way of religion in which lies the salvation of all. This shatters and diminishes the authority of the Scriptures. They do not see that in this defense they are implicitly charging the apostle Paul not only with the crime of lying but even with perjury in the very teaching of piety, that is, in the letter in which Paul proclaims the gospel. It is for this reason he says, before narrating these things [in 1:20], “What I write to you, understand before God that I do not lie.

[AD 430] Augustine of Hippo on Galatians 2:14
That he rebuked him “before all” was necessary, in order that everyone might be bettered by his rebuke. For it was not expedient to correct in secret an error that was doing public harm. It should be added that in his steadfastness and charity Peter, to whom the Lord had said three times, “Do you love me? Feed my sheep,” was very ready to bear this rebuke from a junior shepherd for the salvation of the flock. For the one who was being rebuked was himself more remarkable and more difficult to imitate than the one rebuking. For it is easier to see what one should correct in others than to see what ought to be corrected in oneself. It is easier to correct others by admonishing and rebuking than to be corrected readily even by yourself, let alone by another, still less if you add another and “before all.”

[AD 430] Augustine of Hippo on Galatians 2:14
So that one might fulfill the works of the law, his infirmity being assisted not by his own merit but by the grace of God, they were not to demand from the Gentiles a fleshly observation of the law but were to understand that through the same grace of God they were able to fulfill the spiritual works of the law.

[AD 585] Cassiodorus on Galatians 2:14
He says this so that Hebrews no less than Gentiles may be compelled to accept the grace of faith, not the impositions of the law, which no one could fulfill.

[AD 749] John Damascene on Galatians 2:14
Namely that they did not cease altogether from [observing] the tradition of the Law. As we already said, he spoke in this way on account of the economy; for the whole event was an economy, including the rebuke made by Paul, and the silence and condescension of Peter. For both of them sought one thing, namely, that those who believed in Christ should cease to observe the Law. “If you are a Jew and live as a pagan, and not as a Jew.” Namely, you do not keep the observance of the Law, but like those believers from the nations, you no longer keep the new months and the sabbaths. “How then do you force the nations to do this?” This too indicates the economy of this affair. Although he does not force you, nor does he attempt to persuade the nations to Judaize, Paul says that he does so that the rebuke addressed to Peter might be found to be a useful occasion to him with respect to his own disciples. By saying all this he educates the Galatians to easily cope with the weight of the rebuke for if Peter, being from the Jews, and persuading others to Judaize, was rebuked, and accepted the rebuke, as having been properly addressed to him, how much more should the Galatians, who are from the nations, and believed in Christ, and subjected themselves again to the slavery of the Law should accept the rebuke when it is addressed to them.
[AD 9999] Pseudo-Augustine on Galatians 2:14
The apostle Peter would not have been rebuked if he had separated himself from the Gentiles for fear of giving scandal to the Jews. But what was rebuked in the apostle Peter was that, when he previously had been living in Gentile fashion with believers, he started to teach that the Gentiles ought to follow Jewish practice because he was overcome by fear upon the arrival of Jews from James. Therefore it was said to him, “If you, being a Jew, live in Gentile fashion, why do you force the Gentiles to follow Jewish practice?” For he had introduced doubt about discipleship in the gospel, which is a crime, since he was destroying what he had built. Thus it is that the apostle Paul calls this “insincerity.

[AD 407] John Chrysostom on Galatians 2:15
Ver. 15. "We being Jews by nature, and not sinners of the Gentiles."

These words are hortatory, but are couched in the form of a reproof, on account of those Jews. So elsewhere, under cover of one meaning he conveys another; as where he says in his Epistle to the Romans, "But now I go unto Jerusalem, ministering unto the saints." [Romans 15:25] Here his object was not simply to inform them of the motive of his journey to Jerusalem, but to excite them to emulation in the giving of alms. Had he merely wished to explain his motive, it would have sufficed to say, "I go to ministering unto the saints;" but now observe what he says in addition; "For it has been the good pleasure of Macedonia and Achaia to make a certain contribution for the poor among the saints that are at Jerusalem. Yea, it has been their good pleasure and their debtors they are." And again, "For if the Gentiles have been made partakers of their spiritual things, they owe it to them, also to minister unto them in carnal things." [Romans 15:26-27]

Observe how he represses the high thoughts of the Jews; preparing for one thing by means of another, and his language is authoritative. "We being Jews by nature, and not sinners of the Gentiles." The phrase, "Jews by nature," implies that we, who are not proselytes, but educated from early youth in the Law, have relinquished our habitual mode of life, and be taken ourselves to the faith which is in Christ.

[AD 420] Jerome on Galatians 2:15
A Jew by nature is one of Abraham’s stock, who has been circumcised by his parents on the eighth day. One who is a Jew “not by nature” is one of Gentile origin who has been subsequently made so. That I may embrace the whole argument in a brief discourse, the sense of the text is as follows: “We are Jews by nature, doing those things that were precepts of the law. We are not sinners who come from the Gentiles—either in the sense of those who are sinners generically because they worship idols or those whom Jews now regard as unclean. Yet we know that we cannot be saved by the works of the law but rather by faith in Christ. We have believed in Christ that what the law had not given us our faith would guarantee to us. Seceding from the law in which we could not be saved, we have gone over to faith, in which not the circumcision of the flesh but the devotion of a pure heart is demanded. But what if we now belatedly declare by seceding from the Gentiles that whoever is uncircumcised is unclean? In that case faith in Christ—by which we previously thought we were saved—would rather become a minister of sin than of righteousness. For faith would under that assumption take away the circumcision without which one is unclean.”

[AD 420] Jerome on Galatians 2:15
(Verse 15) We are by nature Jews, and not sinners from the Gentiles. At this point, heretics sneak in, who, inventing ridiculous and foolish things, say that the spiritual nature cannot sin, nor can the earthly nature do anything just. Let us ask them why branches of the good olive tree were broken off and why branches from a wild olive tree were grafted onto the root of the good olive tree, if nothing can fall from good or rise from evil. Or how was Paul persecuting the Church before he became an Apostle if he was of a spiritual nature? Or how did he become an Apostle afterwards if he was generated from earthly sediment? But if they contend that He was not of earthly origin, let us set down His own words: 'We were by nature children of wrath, like the others' (Ephesians II, 3). The Jew by nature is one who is of the race of Abraham and was circumcised by his parents on the eighth day. Not the Jew by nature, who later became one from the Gentiles. But to sum up the whole argument in a few words, this is the sense that is being expressed: 'We', that is, 'I and you, Peter' (for He mixed in His own person, lest it might seem that He was doing injury to them), when we were, He says, Jews by nature, doing the things that were commanded by the Law, and not sinners from among the Gentiles, who either generally, because they serve idols, are sinners, or those whom we now consider unclean, knowing that we cannot be saved by the work of the Law, but by faith in Christ, we believed in Christ, so that what the Law did not give us, faith bestowed on us in Christ.' But if, departing from the Law in which we could not be saved, we turn to faith, in which circumcision of the flesh is not sought but rather devotion of a pure heart, and now by turning away from the Gentiles we do this, so that whoever is not circumcised may be unclean; therefore, faith in Christ, in which we thought we were saved before, is more a minister of sin than of justice, which removes circumcision, and whoever does not have it is unclean. But far be it from me to seek revenge, now that I know that what I once destroyed and considered as useless to me. Once I departed from the Law, I died to the Law in order to live in Christ, and I was crucified with Him, and I was reborn as a new man, relying more on faith than on flesh, and with Christ I departed from the world. What I once embraced, I hold fast. Christ did not die for me in vain: in Him I believed in vain, if I could be saved without faith in Him in the old Law.

[AD 430] Augustine of Hippo on Galatians 2:15
The Jews had given the name of sinners to the Gentiles through a certain pride, already inveterate. It is as though they themselves were just, seeing the mote in another’s eye and not the beam in their own.

[AD 749] John Damascene on Galatians 2:15
Having worked out from the case of those around Peter that circumcision should not be applied, he now works this out in a more complete way. For if those who were Jews from childhood, and not prostylites, but having been brought up in the Law, having seen the weakness of the Law in justifying man, transpose themselves to the grace through faith, how much more those who were not from the beginning from the Law, but from the nations, and having later come to believe in Christ, are not obliged to incline themselves to the Law which is impotent in making one upright.
[AD 220] Tertullian on Galatians 2:16
But what do the Marcionites wish to have believed (on the point)? For the rest, the apostle must (be permitted to) go on with his own statement, wherein he says that "a man is not justified by the works of the law, but by faith: " faith, however, in the same God to whom belongs the law also.

[AD 220] Tertullian on Galatians 2:16
For he remembered that the time was come of which the Psalm spake, "Let us break their bands asunder, and cast off their yoke from us; " since the time when "the nations became tumultuous, and the people imagined vain counsels; "when "the kings of the earth stood up, and the rulers were gathered together against the Lord, and against His Christ," in order that thenceforward man might be justified by the liberty of faith, not by servitude to the law, "because the just shall live by his faith.

[AD 407] John Chrysostom on Galatians 2:16
Ver. 16. "Knowing that a man is not justified by the works of the Law, save through faith, in Jesus Christ, even we believed on Christ Jesus."

Observe here too how cautiously he expresses himself; he does not say that they had abandoned the Law as evil, but as weak. If the law cannot confer righteousness, it follows that circumcision is superfluous; and so far he now proves; but he proceeds to show that it is not only superfluous but dangerous. It deserves special notice, how at the outset he says that a man is not justified by the works of the Law; but as he proceeds he speaks more strongly;

[AD 420] Jerome on Galatians 2:16
Some say that if Paul is right in asserting that no one is justified by the works of the law but from faith in Christ, the patriarchs and prophets and saints who lived before Christ were imperfect. We should tell such people that those who are said not to have obtained righteousness are those who believe that they can be justified by works alone. The saints who lived long ago, however, were justified from faith in Christ, seeing that Abraham saw in advance Christ’s day.

[AD 420] Jerome on Galatians 2:16
In this place we must consider how many are the precepts of the law which no one can fulfill. And it must also be said that some works of the law are done even by those who do not know it. But those who perform it are not justified, because this happens without faith in Christ.

[AD 420] Jerome on Galatians 2:16
(Verse 16). However, knowing that a man is not justified by the works of the Law, but through faith in Jesus Christ, we also have believed in Christ Jesus, so that we may be justified by faith in Christ and not by the works of the Law. Some say: if what Paul affirms is true, that no one is justified by the works of the Law, but by faith in Jesus Christ, then the patriarchs, prophets, and saints who lived before the coming of Christ were imperfect. Those whom we ought to admonish are those who have not attained to justice, who believe that they can be justified by works alone. But the saints, who have been justified by the faith of Christ since ancient times. For Abraham saw the day of Christ and rejoiced. And Moses esteemed the greater riches as a treasure of the Egyptians, as an insult to Christ. For he looked to the reward. And Isaiah saw the glory of Christ, as John the Evangelist recounts, and Judas speaks generally of all: I want to remind you, knowing everything once: that Jesus, saving the people from the land of Egypt, destroyed them secondly, those who did not believe. Where the works of the Law are not so much condemned, as those who trust that they can be justified by works alone, the Savior also spoke to his disciples, Unless your righteousness exceeds that of the scribes and Pharisees, you will not enter the kingdom of heaven (Matt. 5:20). It is necessary to gather (or consider) at this place how many precepts there are in the Law, which no one is able to fulfill. And on the other hand, it must be said that some of the Law is also done by those who are ignorant of it. But this is why his workers are not justified, because they are done without the faith of Christ. For example, not sleeping with a woman as a man sleeps, not committing adultery, not stealing, but rather honoring father and mother, and doing the other things that are commanded. But if they bring us examples of holy men: that they, being versed in the Law, have committed the things that were of the Law, we will say: Because the just Law is not laid down for the law-abiding and the obedient, but for the unjust and the disobedient, the impious and the sinners, the polluted and the unclean (1 Timothy 1). But as for one who is taught by God, it is not necessary for him to be taught about charity, as Paul says: But as for charity, I have no need to write to you: for you yourselves are taught by God to love one another (IV Thess. IV, 9).

[AD 458] Theodoret of Cyrus on Galatians 2:16
The necessary commandments of the law were taught even by nature. That is, “You shall not commit adultery, you shall not murder, you shall not steal, you shall not bear false witness against thy neighbor, honor your father and mother, and the rest of this kind.” But the commandments about the sabbath and circumcision and lepers and menstruation and sacrifice were peculiar to the [Jewish] law, since nature taught nothing about these matters. These are what he now calls “works of the law.” The transgression of these is sin, yet the mere keeping of them is not the way of maintaining perfect righteousness. For these were symbols of other things. Nonetheless they were appropriate to the Jews in their due time.

[AD 160] Shepherd of Hermas on Galatians 2:17
For the Lord has sworn by His glory, in regard to His elect, that if any one of them sin after a certain day which has been fixed, he shall not be saved. For the repentance of the righteous has limits.
You will tell, therefore, those who preside over the Church, to direct their ways in righteousness, that they may receive in full the promises with great glory. Stand stedfast, therefore, ye who work righteousness, and doubt not,

[AD 370] Gaius Marius Victorinus on Galatians 2:17
Suppose that we, after receiving faith in Christ, do in Christ what the Jews do. Suppose we have received faith in Christ and wish to be justified in it. Suppose we have understood that a man is not justified by the works of the law. Would we not then, by observing the works of the law, be made sinners? Then it would be the case that Christ, whom we received in order not to sin, would himself become a minister of sin. Now, when after receiving him we return to sin—that is, to the old covenant—is Christ made a minister of sin? Let this possibility, Paul says, be far from us. One ought not to think in this way and act so as to make Christ a minister of sin, when he suffered in order that sin might perish.

[AD 407] John Chrysostom on Galatians 2:17
Ver. 17. "But if, while we sought to be justified in Christ, we ourselves also were found sinners is Christ a minister of sin?"

If faith in Him, says he, avail not for our justification, but it be necessary again to embrace the Law, and if, having forsaken the Law for Christ's sake, we are not justified but condemned for such abandonment — then shall we find Him, for whose sake we forsook the Law and went over to faith the author of our condemnation. Observe how, he has resolved the matter to a necessary absurdity. And mark how earnestly and strongly he argues. For if, he says, it behooved us not to abandon the Law, and we have so abandoned it for Christ's sake, we shall be judged. Wherefore do you urge this upon Peter, who is more intimately acquainted with it than any one? Hath not God declared to him, that an uncircumcised man ought not to be judged by circumcision; and did he not in his discussion with the Jews rest his bold opposition upon the vision which he saw? Did he not send from Jerusalem unequivocal decrees upon this subject? Paul's object is not therefore to correct Peter, but his animadversion required to be addressed to him, though it was pointed at the disciples; and not only at the Galatians, but also at others who labor under the same error with them. For though few are now circumcised, yet, by fasting and observing the sabbath with the Jews, they equally exclude themselves from grace. If Christ avails not to those who are only circumcised, much more is peril to be feared where fasting and sabbatizing are observed, and thus two commandments of the Law are kept in the place of one. And this is aggravated by a consideration of time: for they so acted at first while the city and temple and other institutions yet existed; but these who with the punishment of the Jews, and the destruction of the city before their eyes, observe more precepts of the Law than the others did, what apology can they find for such observance, at the very time when the Jews themselves, in spite of their strong desire, cannot keep it? You have put on Christ, you have become a member of the Lord, and been enrolled in the heavenly city, and do you still grovel in the Law? How is it possible for you to obtain the kingdom? Listen to Paul's words, that the observance of the Law overthrows the Gospel, and learn, if you will, how this comes to pass, and tremble, and shun this pitfall. Wherefore do you keep the sabbath, and fast with the Jews? Is it that you fear the Law and abandonment of its letter? But you would not entertain this fear, did you not disparage faith as weak, and by itself powerless to save. A fear to omit the sabbath plainly shows that you fear the Law as still in force; and if the Law is needful, it is so as a whole, not in part, nor in one commandment only; and if as a whole, the righteousness which is by faith is little by little shut out. If you keep the sabbath, why not also be circumcised? And if circumcised, why not also offer sacrifices? If the Law is to be observed, it must be observed as a whole, or not at all. If omitting one part makes you fear condemnation, this fear attaches equally to all the parts. If a transgression of the whole is not punishable, much less is the transgression of a part; on the other hand, if the latter be punishable, much more is the former. But if we are bound to keep the whole, we are bound to disobey Christ, or by obedience to Him become transgressors of the Law. If it ought to be kept, those who keep it not are transgressors, and Christ will be found to be the cause of this transgression, for He annulled the Law as regards these things Himself, and bid others annul it. Do you not understand what these Judaizers are compassing? They would make Christ, who is to us the Author of righteousness, the Author of sin, as Paul says, "Therefore Christ is the minister of sin." Having thus reduced the proposition to an absurdity, he had nothing further to do by way of overthrowing it, but was satisfied with the simple protestation,

Ver. 17. "God forbid:" for shamelessness and irreverence need not be met by processes of reasoning, but a mere protest is enough.

[AD 420] Jerome on Galatians 2:17-18
(Vers. 17, 18.) Therefore, by the works of the Law, all flesh will not be justified. But if we seek to be justified in Christ, we ourselves have also been found to be sinners, is Christ then a minister of sin? Certainly not! For if the things that I destroyed, I build again, I make myself a transgressor. That flesh, of which it is written, 'All flesh is grass, and all its glory is like the flower of the field' (Isaiah 40:6), will not be justified by the works of the Law. But that flesh of Jesus Christ is justified by faith, of which it is said in the sacrament of the resurrection: All flesh shall see the salvation of God (Luke 3:6). But also according to a lower understanding, not all flesh was justified by the Law, but only those men who were in Palestine. Now, however, all flesh is justified by the faith of Jesus Christ, while his Church is founded throughout the whole world.

[AD 458] Theodoret of Cyrus on Galatians 2:17
Paul says in effect: “We have forsaken the law and come over to Christ, expecting to enjoy righteousness through faith in him. But suppose that this itself is counted as a transgression. The fault would then pertain to Christ the Lord himself. For it was he who gave us the New Testament. Far be it from us to tolerate such blasphemy!”

[AD 749] John Damascene on Galatians 2:17
Look at the absurd direction into which he leads those who are attached to the Law. If the faith in Christ, he says, is not sufficient to justify, but, once again there is a need to uphold the Law, and if those, having left the Law for Christ, are not justified in doing so, but rather are condemned, then Christ will be found to be the cause of our condemnation, since we left the law on his account in order to run towards the faith. “God forbid,” he says. Seeing the absurdity, which this doctrine leads to, he immediately turns away from it by using this aphorism.
[AD 220] Tertullian on Galatians 2:18
Justly, therefore, did he refuse to "build up again (the structure of the law) which he had overthrown." The law, indeed, had to be overthrown, from the moment when John "cried in the wilderness, Prepare ye the ways of the Lord," that valleys and hills and mountains may be filled up and levelled, and the crooked and the rough ways be made straight and smooth -in other words, that the difficulties of the law might be changed into the facilities of the gospel.

[AD 220] Tertullian on Galatians 2:18
How should (the Church) fear to suffer a fraudulent loss of him whom she had already lost on his ereption, and whom, after condemnation, she could not have held? Lastly, to what will it be becoming for a judge to grant indulgence? to that which by a formal pronouncement he has decisively settled, or to that which by an interlocutory sentence he has left in suspense? And, of course, (I am speaking of) that judge who is not wont "to rebuild those things which he has destroyed, lest he be held a transgressor."

[AD 407] John Chrysostom on Galatians 2:18
Ver. 18. "For if I build up again those things which I destroyed, I prove myself a transgressor."

Observe the Apostle's discernment; his opponents endeavored to show, that he who kept not the Law was a transgressor, but he retorts the argument upon them, and shows that he who did keep the Law was a transgressor, not merely of faith, but of the Law itself. "I build up again the things which I destroyed," that is, the Law; he means as follows: the Law has confessedly ceased, and we have abandoned it, and betaken ourselves to the salvation which comes of faith. But if we make a point of setting it up again, we become by that very act transgressors, striving to keep what God has annulled. Next he shows how it has been annulled.

[AD 407] John Chrysostom on Galatians 2:18
Note the shrewdness of Paul. For they wanted to show that the one who does not keep the law is a transgressor; but he turns the argument upside down, showing that the one who observes the law is a transgressor not against faith but against the law itself. What he says is as follows: “The law has ceased, as we ourselves agree, in so far as we have left it and taken refuge in the salvation of faith. If we now strive to establish it, we become transgressors by this very fact, as we strive to observe the precepts dissolved by God.”

[AD 749] John Damascene on Galatians 2:18
When they say that he who does not keep the law is a transgressor, he says the exact opposite, calling a transgressor the person who keeps the law. It is like saying: The law has ceased, as we confessed, and so, having abandoned it, we have taken refuge with the salvation which is from faith. If, then, we contest about the application of the law, we become transgressor of the same, inasmuch as we contest about keeping what has been dissolved by God.
[AD 215] Clement of Alexandria on Galatians 2:19
Quare tune quidem in came vive bam camaliter: "quod autem nunc vivo in carne, in fide vivo Filii Dei."
[AD 220] Tertullian on Galatians 2:19
Whose grace, if not of that God from whom also came the law? Unless it be, forsooth, that the Creator intercalated His law for the mere purpose of producing some employment for the grace of a rival god, an enemy to Himself (I had almost said, a god unknown to Him), "that as sin had" in His own dispensation "reigned unto death, even so might grace reign through righteousness unto (eternal) life by Jesus Christ," His own antagonist! For this (I suppose it was, that) the law of the Creator had "concluded all under sin," and had brought in "all the world as guilty (before God)," and had "stopped every mouth," so that none could glory through it, in order that grace might be maintained to the glory of the Christ, not of the Creator, but of Marcion! I may here anticipate a remark about the substance of Christ, in the prospect of a question which will now turn up. For he says that "we are dead to the law." It may be contended that Christ's body is indeed a body, but not exactly flesh.

[AD 370] Gaius Marius Victorinus on Galatians 2:19
Now it is possible to see Paul as speaking of two laws—one of Moses, the other of Christ—so that he is saying he is dead to that law, which was given to the Jews, through the law that was given through Christ … that is, “I am dead through the law of Christ to the law formerly given to the Jews.” But Paul may also be seen as doing what both he and the Savior himself often do, so that he speaks of two laws because it is itself, as it were, twofold: one thing when it is understood carnally another when understood spiritually.… Thus the sense will be “For I through the law,” which is now spiritually understood, “am dead to the law”—that law obviously which is understood carnally. And since this is so, “I am dead to the carnal law” because I understand the law spiritually, “so that I live to God.” For what it means for someone to live to God is that he understands those precepts contained in the law not carnally but spiritually, that is, what it is to be truly circumcised and what the true sabbath is.

[AD 407] John Chrysostom on Galatians 2:19-20
Ver. 19, 20. "That I might live unto God, I have been crucified with Christ."

Having said, "I am dead," lest it should be objected, how then do you live? He adds the cause of his living, and shows that when alive the Law slew him, but that when dead Christ through death restored him to life. He shows the wonder to be twofold; that by Christ both the dead was begotten into life, and that by means of death. He here means the immortal life, for this is the meaning of the words, "That I might live unto God I am crucified with Christ." How, it is asked, can a man now living and breathing have been crucified? That Christ has been crucified is manifest, but how can you have been crucified, and yet live? He explains it thus;

[AD 407] John Chrysostom on Galatians 2:19
Ver. 19. "For I through the Law died unto the Law."

This may be viewed in two ways; it is either the law of grace which he speaks of, for he is wont to call this a law, as in the words, "For the law of the Spirit of life made me free:" [Romans 8:2] or it is the old Law, of which he says, that by the Law itself he has become dead to the Law. That is to say, the Law itself has taught me no longer to obey itself, and therefore if I do so, I shall be transgressing even its teaching. How, in what way has it so taught? Moses says, speaking of Christ, "The Lord God will raise up unto you a Prophet from the midst of you of your brethren, like me; unto Him shall you hearken." [Deuteronomy 18:15] Therefore they who do not obey Him, transgress the Law. Again, the expression, "I through the Law died unto the Law," may be understood in another sense: the Law commands all its precepts to be performed, and punishes the transgressor; therefore we are all dead to it, for no man has fulfilled it. Here observe, how guardedly he assails it; he says not, "the Law is dead to me;" but, "I am dead to the Law;" the meaning of which is, that, as it is impossible for a dead corpse to obey the commands of the Law, so also is it for me who have perished by its curse, for by its word am I slain. Let it not therefore lay commands on the dead, dead by its own act, dead not in body only, but in soul, which has involved the death of the body. This he shows in what follows:

[AD 420] Jerome on Galatians 2:19
(Verse 19) For I through the law am dead to the law, that I might live unto God. To die to the law, is to die to the law as a rule of justification. Who dies to the law, lives to God. Before his conversion, the apostle found experience answer to the word of the Lord. The commandment, which was ordained to life, he found to be unto death. The same enlightening Spirit gives a sight of the hateful nature of sin, and the deceitfulness of the heart. Therefore it is said in Hosea: 'From me is your fruit found' (Hosea 14:9). To whom the mystical interpretation is well applied: 'Who is a wise man and understands these things, and a prudent man and knows them?' Therefore, by the spiritual law, one dies to the law of the letter and lives to God, since he is not without the law of God, but is under the law of Christ. But whoever dies to the law because of sins, although he is dead, it cannot be said of him that he lives to God. But there is another spiritual law beyond the law of the letter, as the Apostle elsewhere teaches, saying: Therefore the law is holy, and the commandment holy, and just, and good (Rom. VII, 12). And Ezekiel speaks in the person of God: I brought them out, that is, the people of Judah, from the land of Egypt: and I led them into the desert: and I gave them my commandments, and showed them my justifications: which if a man do, he shall live in them (Ezek. XX, 10). But about that law which works wrath, to which even the Apostle is dead, afterward he says: And I gave them commands that are not good, and justifications in which they will not live (Ibid., 25). The same is also signified in the Psalter: Because I did not know literature, I will enter into the strength of the Lord (Ps. LXX, 51).

I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me. (Galatians 2:20)

[AD 749] John Damascene on Galatians 2:19
This has a double meaning. For he speaks either of the law of grace, or only the old law, indicating that it is through this law that he died to the law. Actually what he says is this: The law itself led me to pay attention to him. If then in my attempt to pay attention to him I transgress it how and it what manner did Moses say the following, applying it to Christ, namely, That the Lord will raise a prophet from you from your brethren like me, and you shall listen to Him? So those who do not believe in Him, they transgress the Law. But what is the meaning of the statement, “I die to the Law?” Just as the dead are not subject to the commandments of the Law, likewise neither am I who, as one who has died to the curse of that Law. For the Law made all accursed those who did not fulfill the things of the Law. Indeed, no one was able to fulfill it completely.
[AD 108] Ignatius of Antioch on Galatians 2:20
I no longer wish to live after the manner of men, and my desire shall be fulfilled if ye consent. Be ye willing, then, that ye also may have your desires fulfilled. I entreat you in this brief letter; do ye give credit to me. Jesus Christ will reveal these things to you, [so that ye shall know] that I speak truly. He is the mouth altogether free from falsehood, by which the Father has truly spoken. Pray ye for me, that I may attain [the object of my desire]. I have not written to you according to the flesh, but according to the will of God. If I shall suffer, ye have wished [well] to me; but if I am rejected, ye have hated me.

[AD 253] Origen of Alexandria on Galatians 2:20
Since Christ was in Paul, who will doubt that he was also likewise in Peter and John and in every individual among the saints, and not only in those who are on earth but also in those in heaven? For it is absurd to say that Christ was in Peter and Paul but not in the archangel Michael or Gabriel.

[AD 373] Athanasius of Alexandria on Galatians 2:20
Christ is the true Son, and so when we receive the Spirit, we are made sons. For it says; ‘you did not receive the spirit of slavery leading you back into fear, but you have received the Spirit of adopted sonship’ [Romans 8:15]. But when we are made sons in the Spirit, it is clear that we are called children of God in Christ... And when the Spirit is given to us-the Saviour said: ‘Receive the Holy Spirit’ [John 20:22]- God [The Father] is in us... But when God is in us, the Son is also in us. For the Lord Himself said: ‘I and the Father will come and make our home with him’ [John 14:23]. Next, the Son is life-for He said: ‘I am the life’ [John 14:6]- and so we are said to be given life in the Spirit... But when we are given life in the Spirit, Christ Himself is said to live in us. For it says: ‘I am crucified with Christ. It is no longer I who live, but Christ who lives in me.’ (Galatians 2:19-20). - "Letters to Separion On the Spirit, Letter 1, Chapter 19"
[AD 384] Ambrosiaster on Galatians 2:20
One who is fixed to the cross of Christ is one who, in imitation of his footsteps, is not ensnared by any worldly desire. Living to God, he appears dead to the world.

[AD 384] Ambrosiaster on Galatians 2:20
There is no doubt that Christ lives in the one who is delivered from death by faith. When Christ forgives the sins of one who is worthy of death, he himself lives in that person, since by his protection the person is snatched from death.

[AD 397] Ambrose of Milan on Galatians 2:20
This means, “Not I, who once ate from the earth [like Adam]. Not I who was once grass, as all flesh is grass, but Christ who lives in me. That is, there lives that living bread which comes from heaven, there lives wisdom, there lives righteousness, there lives the resurrection.”

[AD 407] John Chrysostom on Galatians 2:20
Ver. 20. "Yet I live; and yet no longer I, but Christ lives in me."

In these words, "I am crucified with Christ," he alludes to Baptism and in the words "nevertheless I live, yet not I," our subsequent manner of life whereby our members are mortified. By saying "Christ lives in me," he means nothing is done by me, which Christ disapproves; for as by death he signifies not what is commonly understood, but a death to sin; so by life, he signifies a delivery from sin. For a man cannot live to God, otherwise than by dying to sin; and as Christ suffered bodily death, so does Paul a death to sin. "Mortify," says he, "your members which are upon the earth; fornication, uncleanness, passion;" [Colossians 3:5], and again, "our old man was crucified," [Romans 6:6] which took place in the Bath. After which, if you remain dead to sin, you live to God, but if you let it live again, you are the ruin of your new life. This however did not Paul, but continued wholly dead; if then, he says, I live to God a life other than that in the Law, and am dead to the Law, I cannot possibly keep any part of the Law. Consider how perfect was his walk, and you will be transported with admiration of this blessed soul. He says not, "I live," but, "Christ lives in me;" who is bold enough to utter such words? Paul indeed, who had harnessed himself to Christ's yoke, and cast away all worldly things, and was paying universal obedience to His will, says not, "I live to Christ," but what is far higher, "Christ lives in me." As sin, when it has the mastery, is itself the vital principle, and leads the soul whither it will, so, when it is slain and the will of Christ obeyed, this life is no longer earthly, but Christ lives, that is, works, has mastery within us. His saying, "I am crucified with Him" "I no longer live," but "am dead," seeming incredible to many, he adds,

Ver. 20. "And that life which I now live in the flesh, I live in faith, the faith which is in the Son of God."

The foregoing, says he, relates to our spiritual life, but this life of sense too, if considered, will be found owing to my faith in Christ. For as regards the former Dispensation and Law, I had incurred the severest punishment, and had long ago perished, "for all have sinned, and come short of the glory of God." [Romans 3:23] And we, who lay under sentence, have been liberated by Christ, for all of us are dead, if not in fact, at least by sentence; and He has delivered us from the expected blow. When the Law had accused, and God condemned us, Christ came, and by giving Himself up to death, rescued us all from death. So that "the life which I now live in the flesh, I live in faith." Had not this been, nothing could have averted a destruction as general as that which took place at the flood, but His advent arrested the wrath of God, and caused us to live by faith. That such is his meaning appears from what follows. After saying, that "the life which I now live in the flesh, I live in faith," he adds,

Ver. 20. "In the Son of God, Who loved me, and gave Himself up for me."

How is this, O Paul! Why do you appropriate a general benefit, and make your own what was done for the whole world's sake? For he says not, "Who loved us," but, "Who loved me." And besides the Evangelist says, "God so loved the world;" [John 3:16] and Paul himself, "He that spared not His own Son, but delivered Him up," not for Paul only, but, "for us all;" [Romans 8:32] and again, "that He might purify unto himself a people for his own possession," [Titus 2:14] But considering the desperate condition of human nature, and the ineffably tender solicitude of Christ, in what He delivered us from, and what He freely gave us, and kindled by the yearning of affection towards Him, he thus expresses himself. Thus the Prophets often appropriate to themselves Him who is God of all, as in the words, "O God, you are my God, early will I seek You." [Psalm 63:1] Moreover, this language teaches that each individual justly owes as a great debt of gratitude to Christ, as if He had come for his sake alone, for He would not have grudged this His condescension though but for one, so that the measure of His love to each is as great as to the whole world. Truly the Sacrifice was offered for all mankind, and was sufficient to save all, but those who enjoy the blessing are the believing only. Nevertheless it did not deter Him from His so great condescension, that not all would come; but He acted after the pattern of the supper in the Gospel, which He prepared for all, [Luke 14:16] yet when the guests came not, instead of withdrawing the viands, He called in others. So too He did not despise that sheep, though one only, which had strayed from the ninety and nine. [Matthew 18:12] This too in like manner St. Paul intimates, when he says, speaking about the Jews, "For what if some were without faith, shall their want of faith make of none effect the faithfulness of God? God forbid: yea let God be found true, but every man a liar." [Romans 3:3-4] When He so loved you as to give Himself up to bring you who wast without hope to a life so great and blessed, can you, thus gifted, have recourse to things gone by? His reasoning being completed, he concludes with a vehement asseveration, saying,

[AD 407] John Chrysostom on Galatians 2:20
What are you doing, Paul, making common things your own, and claiming for yourself what was done on behalf of the whole world? For he says not “who loved us” but “who loved me.” … But Paul speaks in this highly personal voice, aware of the culpability of human nature and the ineffable compassion of Christ, aware of what he redeems us from and what grace he confers upon us. Burning with desire toward him, he utters this. In just this way did the prophets often make the universal God their own, crying, “My God, my God, I invoke you.” He shows that each of us ought to render as much thanks to Christ as though Christ had come for him alone. For God would not have withheld this gift even from one person. He has the same love for every individual as for the whole world.

[AD 420] Jerome on Galatians 2:20
Judas and the priests, with the princes, handed him over, and Pilate, to whom he was finally handed over, handed him over again. But the Father handed him over that he might save the abandoned world. Jesus gave himself, that he might do the Father’s will. But Judas and the priests and elders of the people and Pilate unwittingly handed over their lives to death.

[AD 420] Jerome on Galatians 2:20
(Verse 20.) But I no longer live; Christ lives in me. The person who once lived under the law no longer lives, for they persecuted the Church. But Christ lives in them, providing wisdom, strength, speech, peace, joy, and other virtues. The one who does not possess these virtues cannot say, 'Christ lives in me.' And all of this is said in opposition to Peter, directed at Peter.

But as for now, I live in the flesh. To be in the flesh is one thing, and to live in the flesh is another. For those who are in the flesh cannot please God (Rom. VIII, 8, 9). Therefore, it is said to those who live well: However, you are not in the flesh.

I live by faith in the Son of God, who loved me and gave himself for me. He speaks about God to the Romans, that he did not spare his own Son, but gave him up for us. Now, about Christ, that he gave himself up: 'He loved me,' he says, 'and gave himself for me.' In the Gospel, where the apostles are listed, it is stated: 'And Judas Iscariot ((also Scariot)), who betrayed him' (Luke 6:16). Again, in the same Gospel: 'Look, the one who will betray me is approaching' (Matthew 26:46). But the Scriptures mention the high priests and elders of the people, who condemned Jesus to death and, binding him, led him and delivered him to Pilate the governor (ibid., XXVII, and Mark XV). And afterwards about Pilate: He released Barabbas to them, but Jesus, after being flogged, he handed over to them to crucify (John XIX). Therefore, the Father handed over the Son, and the Son himself handed over, and Judas and the priests handed him over to the rulers, and finally, having been handed over to him, Pilate himself delivered him. But the Father handed over, in order to save the lost world: Jesus himself handed himself over, in order to do the will of the Father and his own: However, Judas and the priests and the elders of the people, and Pilate, delivered him, ignorant of life unto death. And when she also handed herself over for our salvation, blessed and very happy is he who, with Christ living in him, can say through every thought and action: I live by the faith of the Son of God, who loved me and delivered himself for me.

[AD 430] Augustine of Hippo on Galatians 2:20
The human spirit, cleaving to the Spirit of God, struggles against the flesh that is, against itself and on its own behalf. Those impulses natural to humanity, whether in the flesh or in the soul, which remain because of our acquired debility, are restrained by discipline for the sake of obtaining salvation. So the human being who does not live according to human nature can already say, “I live, yet not I, but Christ lives in me.” For where I am not I, I am more happily I. Thus when any reprobate impulse arises according to my old human nature, to which I who serve the law of God with my mind do not consent, I may now say this: “now I am not the one doing that.”

[AD 749] John Damascene on Galatians 2:20
To the Law he says or inasmuch as it pertains to the Law.
[AD 384] Ambrosiaster on Galatians 2:21
Since a future life is promised to Christians, the one who now lives with God’s assistance lives in the faith of the promised life. For this one contemplates his image, having the pledge of the future life, which was procured for us by Christ’s love in accordance with God’s will. The one who is grateful to Christ is therefore the one who endures in faith toward him. He knows that he has no benefit from anyone but Christ and treats Christ with dishonor if he compares any other to him.

[AD 384] Ambrosiaster on Galatians 2:21
The law could not give remission of sins, nor triumph over the second death nor free from captivity those who were bound because of sin. The reason for Christ’s death was to provide those things that the law could not. He did not die in vain, for his death is the justification of sinners.

[AD 407] John Chrysostom on Galatians 2:21
Ver. 21. "I do not make void the grace of God."

Let those, who even now Judaize and adhere to the Law, listen to this, for it applies to them.

Ver. 21. "For if righteousness is through the Law, then Christ died for naught."

What can be more heinous than this sin? what more fit to put one to shame than these words? Christ's death is a plain proof of the inability of the Law to justify us; and if it does justify, then is His death superfluous. Yet how could it be reasonable to say that has been done heedlessly and in vain which is so awful, so surpassing human reason, a mystery so ineffable, with which Patriarchs travailed, which Prophets foretold, which Angels gazed on with consternation, which all men confess as the summit of the Divine tenderness? Reflecting how utterly out of place it would be if they should say that so great and high a deed had been done superfluously, (for this is what their conduct came to,) he even uses violent language against them, as we find in the words which follow.

[AD 407] John Chrysostom on Galatians 2:21
How could an act so great, so awesome and surpassing human reason be to no purpose? How could a mystery so ineffable, for which the prophets yearned in travail, the patriarchs foresaw and the angels were astonished to behold, acknowledged by all as the crown of God’s loving care—how could one say that this was vain and futile? Considering therefore how exceedingly absurd it would be for them to say a deed of such significance and magnitude had been superfluous … Paul adopts an indignant tone toward them saying, “O foolish Galatians.”

[AD 420] Jerome on Galatians 2:21
(Verse 21.) I do not reject the grace of God; for if justice is through the Law, then Christ died in vain. He rejects the grace of God, both the one who lives under the Law after the Gospel, and the one who becomes defiled by sins after baptism. But he who can say with the Apostle: His grace in me was not in vain (1 Cor. XV, 10), he also speaks confidently of this: I do not reject the grace of God. What follows, however, is very necessary against those who think that the precepts of the Law must be observed after the faith of Christ. For it must be said to them: If righteousness comes through the law, then Christ died for nothing. Or certainly they should teach how Christ did not die for nothing if works justify. But even though they may be dull, they will not dare to say that Christ died without cause. Therefore, in regard to the participle of the syllogism that is proposed here, that is: If righteousness comes through the law, then Christ died for nothing, we must accept what is consequentially inferred and cannot be denied: but Christ did not die for nothing; and conclude: Therefore, righteousness does not come through the law. So far he has been against Peter, but now he is turning towards the Galatians.

[AD 749] John Damascene on Galatians 2:21
I have been freed through the grace, he says. Therefore, I do not turn back to the Law, nor do I revile the grace as being impotent to vivify. “For if righteousness is through the Law, the Christ has died in vain.” Christ died for us, he says, that he might raise us up, justifying us and removing sin from our midst. But if those who attempt to persuade others to be circumcised say that man is justified in the law, then the death of Christ is made redundant.