10 And it came to pass, as Jesus sat at meat in the house, behold, many publicans and sinners came and sat down with him and his disciples.
[AD 367] Hilary of Poitiers on Matthew 9:9-13
It is a very fearful thing to be seized by death while the sins are yet unforgiven by Christ; for there is no way to the heavenly house for him whose sins have not been forgiven. But when this fear is removed, honour is rendered to God, who by His word has in this way given power to men, of forgiveness of sins, of resurrection of the body, and of return to Heaven.

Christ came for all; how is it then that He says He came not for the righteous? Were there those for whom it needed not that He should come? But no man is righteous by the law. He shows how empty their boast of justification, sacrifices being inadequate to salvation, mercy was necessary for all who were set under the Law.

[AD 407] John Chrysostom on Matthew 9:9-13
(Hom. xxx.) Having wrought this miracle, Christ would not abide in the same place, lest He should rouse the envy of the Jews. Let us also do thus, not obstinately opposing those who lay in wait for us. And as Jesus departed thence, (namely from the place in which He had done this miracle,) he saw a man sitting at the receipt of custom, Matthew by name.

Herein he shows the excellent power of Him that called him; while engaged in this dangerous office He rescued him from the midst of evil, as also Paul while he was yet mad against the Church. He saith unto him, Follow me. As you have seen the power of Him that calleth, so learn the obedience of him that is called; he neither refuses, nor requests to go home and inform his friends.

But why did He not call him at the same time with Peter and John and the others? Because he was then still in a hardened state, but after many miracles, and great fame of Christ, when He who knows the inmost secrets of the heart, perceived him more disposed to obedience, then He called him.

Why is it then that nothing is said of the rest of the Apostles how or when they were called, but only of Peter, Andrew, James, John, and Matthew? Because these were in the most alien and lowly stations, for nothing can be more disreputable than the office of Publican, nothing more abject than that of fisherman.

Matthew being honoured by the entrance of Jesus into his house, called together all that followed the same calling with himself; Behold many Publicans and sinners came and sat down with Jesus, and with his disciples.

Thus they came near to our Redeemer, and that not only to converse with Him, but to sit at meat with Him; for so not only by disputing, or healing, or convincing His enemies, but by eating with them, He oftentimes healed such as were ill-disposed, by this teaching us, that all times, and all actions, may be made means to our advantage. When the Pharisees saw this they were indignant; And the Pharisees beholding said to his disciples, Why eateth your Master with Publicans and sinners? It should be observed, that when the disciples seemed to be doing what was sinful, these same addressed Christ, Behold, thy disciples are doing what it is not allowed to do on the Sabbath. (Mat. 12:2.) Here they speak against Christ to His disciples, both being the part of malicious persons, seeking to detach the hearts of the disciple from the Master.

Having first spoken in accordance with common opinion, He now addresses them out of Scripture, saying, Go ye, and learn what that meaneth, I will have mercy and not sacrifice.

As much as to say; How do you accuse me for reforming sinners? Therefore in this you accuse God the Father also. For as He wills the amendment of sinners, even so also do I. And He shows that this that they blamed was not only not forbidden, but was even by the Law set above sacrifice; for He said not, I will have mercy as well as sacrifice, but chooses the one and rejects the other.

Whence we may suppose that He is speaking ironically, as when it is said, Behold now Adam is become as one of us. (Gen. 3:22.) For that there is none righteous on earth Paul shows, All have sinned, and need glory of God. (Rom. 3:23.) By this saying He also consoled those who were called; as though He had said, So far am I from abhorring sinners, that for their sakes only did I come.

[AD 420] Jerome on Matthew 9:9-13
The other Evangelists from respect to Matthew have not called him by his common name, but say here, Levi, for he had both names. Matthew himself, according to that Solomon says. The righteous man accuses himself, (Prov. 18:17.) calls himself both Matthew and Publican, to show the readers that none need despair of salvation who turn to better things, seeing he from a Publican became an Apostle.

Porphyry and the Emperor Julian insist from this account, that either the historian is to be charged with falsehood, or those who so readily followed the Saviour with haste and temerity; as if He called any without reason. They forget also the signs and wonders which had preceded, and which no doubt the Apostles had seen before they believed. Yea the brightness of effulgence of the hidden Godhead which beamed from His human countenance might attract them at first view. For if the loadstone can, as it is said, attract iron, how much more can the Lord of all creation draw to Himself whom He will!

But they had seen the Publican turning from sins to better things, and finding place of repentance, and on this account they do not despair of salvation.

For they do not come to Jesus while they remain in their original condition of sin, as the Pharisees and Scribes complain, but in penitence, as what follows proves; But Jesus hearing said, They that be whole need not a physician, but they that are sick.

This text from Osee (Hosea 6:6.) is directed against the Scribes and Pharisees, who, deeming themselves righteous, refused to keep company with Publicans and sinners.

[AD 430] Augustine of Hippo on Matthew 9:9-13
(De Cons. Ev. ii. 26.) Or, perhaps it is more probable that Matthew here turns back to relate something that he had omitted; and we may suppose Matthew to have been called before the sermon on the mount; for on the mount, as Luke relates, the twelve, whom He also named Apostles, were chosen.

(De. Cons. Ev. ii. 27.) Matthew has not said in whose house Jesus sat at meat (on this occasion), from which we might suppose, that this was not told in its proper order, but that what took place at some other time is inserted here as it happened to come into his mind; did not Mark and Luke who relate the same show that it was in Levi's, that is, in Matthew's house.

(ubi sup.) Luke seems to have related this a little differently; according to him the Pharisees say to the disciples, Why do ye eat and drink with Publicans and sinners? (Luke 5:30.) not unwilling that their Master should be understood to be involved in the same charge; insinuating it at once against Himself and His disciples. Therefore Matthew and Mark have related it as said to the disciples, because so it was as much an objection against their Master whom they followed and imitated. The sense therefore is one in all, and so much the better conveyed, as the words are changed while the substance continues the same.

(ubi sup.) Luke adds to repentance, which explains the sense; that none should suppose that sinners are loved by Christ because they are sinners; and this comparison of the sick shows what God means by calling sinners, as a physician does the sick to be saved from their iniquity as from a sickness: which is done by penitence.

[AD 533] Remigius of Rheims on Matthew 9:9-13
He esteems lightly human dangers which might accrue to him from his masters for leaving his accounts in disorder, but, he arose, and followed him. And because he relinquished earthly gain, therefore of right was he made the dispenser of the Lord's talents.

[AD 856] Rabanus Maurus on Matthew 9:9-13
(e Beda.) They are here in a twofold error; first, they esteemed themselves righteous, though in their pride they had departed far from righteousness; secondly, they charged with unrighteousness those who by recovering themselves from sin were drawing near to righteousness.

He calls Himself a physician, because by a wonderful kind of medicine He was wounded for our iniquities that He might heal the wound of our sin. By the whole, He means those who seeking to establish their own righteousness have not submitted to the true righteousness of God. By the sick, (Rom. 10:3.) He means those who, tied by the consciousness of their frailty, and seeing that they are not justified by the Law, submit themselves in penitence to the grace of God.

He therefore warns them, that by deeds of mercy they should seek for themselves the rewards of the mercy that is above, and, not overlooking the necessities of the poor, trust to please God by offering sacrifice. Wherefore, He says, Go; that is, from the rashness of foolish fault-finding to a more careful meditation of Holy Scripture, which highly commends mercy, and proposes to them as a guide His own example of mercy, saying, I came not to call the righteous but sinners.

In the call of Matthew and the Publicans is figured the faith of the Gentiles who first gaped after the gain of the world, and are now spiritually refreshed by the Lord; in the pride of the Pharisees, the jealousy of the Jews at the salvation of the Gentiles. Or, Matthew signifies the man intent on temporal gain; Jesus sees him, when He looks on him with the eyes of mercy. For Matthew is interpreted 'given,' Levi 'taken,' the penitent is taken out of the mass of the perishing, and by God's grace given to the Church. And Jesus saith unto him, Follow me, either by preaching, or by the admonition of Scripture, or by internal illumination.

[AD 1274] Glossa Ordinaria on Matthew 9:9-13
(ap. Anselm.) He says, sitting at the receipt of custom, that is, in the place where the tolls were collected. He was named Telonarius, from a Greek word signifying taxes.

(non occ.) Matthew places his calling among the miracles; for a great miracle it was, a Publican becoming an Apostle.

(ap. Anselm.) As a meet return for the heavenly mercy, Matthew prepared a great feast for Christ in his house, bestowing his temporal goods on Him of whom he looked to receive everlasting goods. It follows, And it came to pass as he sat at meat in the house.

(ap. Anselm.) The Publicans were they who were engaged in public business, which seldom or never can be carried on without sin. And a beautiful omen of the future, that he that was to be an Apostle and doctor of the Gentiles, at his first conversion draws after him a great multitude of sinners to salvation, already performing by his example what he was shortly to perform by word.

(ord.) Tertullian says that these must have been Gentiles, because Scripture says, There shall be no payer of tribute in Israel, as if Matthew were not a Jew. But the Lord did not sit down to meat with Gentiles, being more especially careful not to break the Law, as also He gave commandment to His disciples below, Go not into the way of the Gentiles.

(ap. Anselm.) Yet does not God contemn sacrifice, but sacrifice without mercy. But the Pharisees often offered sacrifices in the temple that they might seem to men to be righteous, but did not practise the deeds of mercy by which true righteousness is proved.

(ap. Anselm.) Or; Those who were righteous, as Nathanael and John the Baptist, were not to be invited to repentance. Or. I came not to call the righteous, that is, the feignedly righteous, those who boasted of their righteousness as the Pharisees, but those that owned themselves sinners.

[AD 220] Tertullian on Matthew 9:10
Nor would the name of publicans have been so execrable in the eyes of the Lord, unless as being a "strange" name,-a (name) of such as put up the pathways of the very sky, and earth, and sea, for sale. Moreover, when (the writer) adjoins "sinners" to "publicans," it does not follow that he shows them to have been Jews, albeit some may possibly have been so; but by placing on a par the one genus of heathens-some sinners by office, that is, publicans; some by nature, that is, not publicans-he has drawn a distinction between them.

[AD 407] John Chrysostom on Matthew 9:10
Having therefore called him, He also honored him with a very great honor by partaking straightway of his table; for in this way He would both give him good hope for the future, and lead him on to a greater confidence. For not in a long time, but at once, He healed his vice. And not with him only does He sit down to meat, but with many others also; although this very thing was accounted a charge against Him, that He chased not away the sinners. But neither do they conceal this point, what sort of blame is endeavored to be fixed on His proceedings.

Now the publicans come together as to one of the same trade; for he, exulting in the entrance of Christ, had called them all together. The fact is, Christ used to try every kind of treatment; and not when discoursing only, nor when healing, nor when reproving His enemies, but even at His morning meal, He would often correct such as were in a bad way; hereby teaching us, that every season and every work may by possibility afford us profit. And yet surely what was then set before them came of injustice and covetousness; but Christ refused not to partake of it, because the ensuing gain was to be great: yea rather He becomes partaker of the same roof and table with them that have committed such offenses. For such is the quality of a physician; unless he endure the corruption of the sick, he frees them not from their infirmity.

And yet undoubtedly He incurred hence an evil report: first by eating with him, then in Matthew's house, and thirdly, in company with many publicans. See at least how they reproach Him with this. Behold a man gluttonous, and a wine-bibber, a friend of publicans and sinners. Matthew 11:19

Let them hear, as many as are striving to deck themselves with great honor for fasting, and let them consider that our Lord was called a man gluttonous and a winebibber, and He was not ashamed, but overlooked all these things, that he might accomplish what He had set before him; which indeed was accordingly done. For the publican was actually converted, and thus became a better man.

And to teach you that this great thing was wrought by his partaking of the table with Him, hear what Zacchæus says, another publican. I mean, when he heard Christ saying, Today, I must abide in your house, the delight gave him wings, and he says, The half of my goods I give to the poor, and if I have taken anything from any man by false accusation, I restore him fourfold. And to him Jesus says, This day is salvation come to this house. So possible is it by all ways to give instruction.

But how is it, one may say, that Paul commands, If any man that is called a brother be a fornicator or covetous, with such an one no, not to eat? 1 Corinthians 5:11 In the first place, it is not as yet manifest, whether to teachers also he gives this charge, and not rather to brethren only. Next, these were not yet of the number of the perfect, nor of those who had become brethren. And besides, Paul commands, even with respect to them that had become brethren, then to shrink from them, when they continue as they were, but these had now ceased, and were converted.
[AD 407] John Chrysostom on Matthew 9:10
Now the tax collectors came together because they were of the same trade as Matthew was. For he took pride in the visit of the Messiah and invited them all together. The Messiah applied every form of healing. Not only while he was engaging in a formal discussion or healing or refuting his enemies, but even at breakfast he used to restore persons who were in bad condition. By means of these practices he taught us that every moment and every action can offer benefit to us.Certainly the dishes Matthew set before him at that time had come from unrighteousness and covetousness. But Christ did not ask to be excused from participating in them, because the gain to be derived from it was going to be great. Rather, he shared the same roof and the same table with people who had erred in their manner of acquiring such things. For such is the nature of the physician. If he did not put up with the decay of the persons who are sick, he would not set them free from their sickness. Certainly Jesus got a bad reputation from this action, by eating with Matthew, by eating in his house and by eating with many tax collectors. This is why you see them criticizing him with this: “Behold a man who is gluttonous and drinks a lot of wine, a friend of tax collectors and sinners.”

[AD 420] Jerome on Matthew 9:10-12
(V. 10 seq.) And it came to pass, as he sat at table in his house, behold many publicans and sinners came and sat down with Jesus and his disciples. And when the Pharisees saw it, they said to his disciples, 'Why does your teacher eat with tax collectors and sinners?' But when Jesus heard it, he said, 'Those who are well have no need of a physician, but those who are sick. Go and learn what this means: "I desire mercy, and not sacrifice." For I came not to call the righteous, but sinners.''

[AD 450] Peter Chrysologus on Matthew 9:10
Jesus’ sitting at table has more significance for Matthew than just dining. Jesus will be feasting not on food but on the return of sinners. He will call them back through feasting, collegiality and human affection, enjoying himself with their pleasant conversation while reclining at table. He knew that if they recognized him as a powerful judge they would be shattered by the terror of his majesty and overwhelmed by the sheer presence of God unveiled (nuda). Thus, veiled in a human body he was able to communicate with humans. He who wanted to assist the guilty hides the fact that he was a judge. He who did not deny dignity to faithful servants conceals his lordship. He who desired the weak to be embraced by a parent’s love covers his majesty.