What he means is somewhat as follows. Pharaoh was a vessel of wrath, that is, a man who by his own hard-heartedness had kindled the wrath of God. For after enjoying much long-suffering, he became no better, but remained unimproved. Wherefore he calls him not only "a vessel of wrath," but also one "fitted for destruction." That is, fully fitted indeed, but by his own proper self. For neither had God left out anything of the things likely to recover him, nor did he leave out anything of those that would ruin him, and put him beyond any forgiveness. Yet still, though God knew this, "He endured him with much long-suffering," being willing to bring him to repentance. For had He not willed this, then He would not have been thus long-suffering. But as he would not use the long-suffering in order to repentance, but fully fitted himself for wrath, He used him for the correction of others, through the punishment inflicted upon him making them better, and in this way setting forth His power. For that it is not God's wish that His power be so made known, but in another way, by His benefits, namely, and kindnesses, he had shown above in all possible ways. For if Paul does not wish to appear powerful in this way ("not that we should appear approved," he says, "but that you should do that which is honest,") [2 Corinthians 13:7], much less does God. But after that he had shown long-suffering, that He might lead to repentance, but he did not repent, He suffered him a long time, that He might display at once His goodness and His power, even if that man were not minded to gain anything from this great long-suffering. As then by punishing this man, who continued incorrigible, He showed His power, so by having pitied those who had done many sins but repented, He manifested His love toward man. But it does not say, love towards man, but glory, to show that this is especially God's glory, and for this He was above all things earnest. But in saying, "which He had afore prepared unto glory," he does not mean that all is God's doing. Since if this were so, there were nothing to hinder all men from being saved. But he is setting forth again His foreknowledge, and doing away with the difference between the Jews and the Gentiles. And on this topic again he grounds a defense of his statement, which is no small one. For it was not in the case of the Jews only that some men perished, and some were saved, but with the Gentiles also this was the case. Wherefore he does not say, all the Gentiles, but, "of the Gentiles," nor, all the Jews, but, "of the Jews." As then Pharaoh became a vessel of wrath by his own lawlessness, so did these become vessels of mercy by their own readiness to obey. For though the more part is of God, still they also have contributed themselves some little. Whence he does not say either, vessels of well-doing, or vessels of boldness (παρρησίας), but "vessels of mercy," to show that the whole is of God. For the phrase, "it is not of him that wills, nor of him that runs," even if it comes in the course of the objection, still, were it said by Paul, would create no difficulty. Because when he says, "it is not of him that wills, nor of him that runs," he does not deprive us of free-will, but shows that all is not one's own, for that it requires grace from above. For it is binding on us to will, and also to run: but to confide not in our own labors, but in the love of God toward man. And this he has expressed elsewhere. "Yet not I, but the grace which was with me." [1 Corinthians 15:10] And he well says, "Which He had afore prepared unto glory." For since they reproached them with this, that they were saved by grace, and thought to make them ashamed, he far more than sets aside this insinuation. For if the thing brought glory even to God, much more to them through whom God was glorified. But observe his forbearance, and unspeakable wisdom. For when he had it in his power to adduce, as an instance of those punished, not Pharaoh, but such of the Jews as had sinned, and so make his discourse much clearer, and show that where there were the same fathers, and the same sins, some perished, and some had mercy shown them, and persuade them not to be doubtful-minded, even if some of the Gentiles were saved, while the Jews were perishing; that he might not make his discourse irksome, the showing forth of the punishment he draws from the foreigner, so that he may not be forced to call them "vessels of wrath." But those that obtained mercy he draws from the people of the Jews. And besides, he also has spoken in a sufficient way in God's behalf, because though He knew very well that the nation was fitting itself as a vessel of destruction, still He contributed all on His part, His patience, His long-suffering, and that not merely long-suffering, but "much long-suffering;" yet still he was not minded to state it barely against the Jews. Whence then are some vessels of wrath, and some of mercy? Of their own free choice. God, however, being very good, shows the same kindness to both. For it was not those in a state of salvation only to whom He showed mercy, but also Pharaoh, as far as His part went. For of the same long-suffering, both they and he had the advantage. And if he was not saved, it was quite owing to his own will: since, as for what concerns God, he had as much done for him as they who were saved. Having then given to the question that answer which was furnished by facts, in order to give his discourse the advantage of other testimony in its favor, he introduces the prophets also making the same declarations aforetime. For Hosea, he says, of old put this in writing, as follows:
For the apostle decrees that, "putting off the works of darkness, we should put on the armour of light, walking honestly as in the day, not spending our time in rioting and drunkenness, in chambering and wantonness.".
Non enim "carnis curam gerere ad concupiscent as "didicimus; "honeste autem tanquam in die "Christo, et Dominica lucida vitae institutione, "ambulantes, non in comessationibus et ebrietatibus, non in cubilibus et impudicitiis, non in lit bus et contention bus."
Nay, but this whole world is the one house of all; in which world it is more the heathen, who is found in darkness, whom the grace of God enlightens, than the Christian, who is already in God's light. Finally, it is one "straying" which is ascribed to the ewe and the drachma: (and this is an evidence in my favour); for if the parables had been composed with a view to a Christian sinner, after the loss of his faith, a second loss and restoration of them would have been noted.
This may be understood in both a universal and in a particular sense. In the first instance, the light is dawning everywhere, and the reign of darkness over the world is rapidly coming to an end.… In the second instance, if we have Christ in our hearts he gives us light. Therefore if the reason of knowledge drives away our ignorance and if we turn away from unworthy deeds and do what is right, we are in the light and are walking honestly as if in the day.
And therefore, beloved brethren, the Lord, taking thought for this risk, that none should fall into the snare of death through jealousy of his brother, when His disciples asked Him which among them should be the greatest, said, "Who soever shall be least among you all, the same shall be great." He cut off all envy by His reply. He plucked out and tore away every cause anti matter of gnawing envy. A disciple of Christ must not be jealous, must not be envious. With us there can be no contest for exaltation; from humility we grow to the highest attainments; we have learnt in what way we may be pleasing. And finally, the Apostle Paul, instructing and warning, that we who, illuminated by the light of Christ, have escaped from the darkness of the conversation of night, should walk in the deeds and works of light, writes and says, "The night has passed over, and the day is approaching: let us therefore cast away the works of darkness, and let us put upon us the armour of light. Let us walk honestly, as in the day; not in rioting and drunkenness, not in lusts and wantonness, not in strifes and jealousy." If the darkness has departed from your breast, if the night is scattered therefrom, if the gloom is chased away, if the brightness of day has illuminated your senses, if you have begun to be a man of light, do those things which are Christ's, because Christ is the Light and the Day.
“Night” means the old man, who is renewed through baptism. Paul says that he has passed away like the night and that the day is near, i.e., the sun of righteousness, by whose light the truth appears to us so that we may know what to do. For before we were in the dark, being ignorant of Christ. But when we learned of him the light rose on us and we passed from the false to the true.The “darkness” refers to carnal sins, which are done by worldly enticements.… But to “put on the armor of light” is to do good deeds.
The “day” is the time of this life which remains to us, in which we can do good works. The “night” is the future, in which it will no longer be possible to work. Then we shall lie in the darkness, having lost the chance to do good works.
If then this is upon ending, and the latter is drawing near, let us henceforth do what belongs to the latter, not to the former. For this is what is done in the things of this life. And when we see the night pressing on towards the morning, and hear the swallow twittering, we each of us awake our neighbor, although it be night still. But so soon as it is actually departing, we hasten one another, and say It is day now! And we all set about the works of the day, dressing, and leaving our dreams, and shaking our sleep thoroughly off, that the day may find us ready, and we may not have to begin getting up, and stretching ourselves, when the sunlight is up. What then we do in that case, that let us do here also. Let us put off imaginings, let us get clear of the dreams of this life present, let us lay aside its deep slumber, and be clad in virtue for garments. For it is to point out all this that he says,
"Let us therefore cast off the works of darkness, and let us put on the armor of light."
Yes, for the day is calling us to battle-array, and to the fight. Yet fear not at hearing of array and arms. For in the case of the visible suit of armor, to put it on is a heavy and abhorred task. But here it is desirable, and worth being prayed for. For it is of Light the arms are! Hence they will set you forth brighter than the sunbeam, and giving out a great glistening, and they place you in security: for they are arms, and glittering do they make you: for arms of light are they! What then, is there no necessity for you to fight? Yea, needful is it to fight, yet not to be distressed and toil. For it is not in fact war, but a solemn dance and feast-day, such is the nature of the arms, such the power of the Commander. And as the bridegroom goes forth with joyous looks from his chamber, so does he too who is defended with these arms. For he is at once soldier and bridegroom. But when he says, "the day is at hand," he does not even allow it to be but near, but puts it even now beside us. For he says,
"Let us walk becomingly," (A.V. honestly, in this sense) "as in the day." For day it already is. And what most people insist upon very much in their exhortations, that he also uses to draw them on, the sense of the becoming. For they had a great regard to the esteem of the multitude. And he does not say, walk ye, but let us walk, so making the exhortation free from anything grating, and the reproof gentle.
"Not in rioting and drunkenness." Not that he would forbid drinking, but the doing it immoderately; not the enjoying of wine, but doing it to excess (μετά παροινίας]). As also the next thing he states likewise with the same measure, in the words,
"Not in chambering and wantonness;" for here also he does not prohibit the intercourse of the sexes, but committing fornication. "Not in strife and envying." It is the deadly kind of passions then that he is for extinguishing, lust, namely, and anger. Wherefore it is not themselves only, but even the sources of them that he removes. For there is nothing that so kindles lust, and inflames wrath, as drunkenness, and sitting long at the wine. Wherefore after first saying, "not in rioting and drunkenness," then he proceeded with, "not in chambering and wantonness, not in strife and envying." And even here he does not pause, but after stripping us of these evil garments, hear how he proceeds to ornament us, when he says,
The day is calling us to get ready for the battle. Do not be afraid at the thought of bearing arms. It is a heavy and distasteful duty when we have to bear a visible suit of armor, but in this case it is desirable and worth it. For the arms we are called to bear are those of the light!
Paul likens knowledge to the day and ignorance to the night, in accordance with what Hosea says: “I have likened your mother to the night; my people have become as those who have no knowledge.” Let us therefore cast off the works of ignorance and put on the armor of light, that is, works of light.
By “day” Paul means the time since the coming of Christ, for his appearing has made it much easier to tell the difference between good and evil. “Night” refers to the time before his coming.
Paul said this, yet look at how many years have passed since then! Yet what he said was not untrue. How much more probable it is that the coming of the Lord is near now, when there has been such an increase of time toward the end!
[AD 407] John Chrysostom on Romans 9:22-23:24