2 Cor. 1:20. For all the promises of God in Him are "yes" and in Him "Amen," – to the glory of God, through us.
In the preaching there are many promises: the resurrection of the dead, adoption, and in general the hope of the age to come. So then, he says that not only is the preaching always perfectly the same and proclaimed with unchangeableness, but so also are the promises contained in it, for they are God's. And what God has promised is in Him "yes" and in Him "amen," that is, it is unchangeable, for it is fulfilled not in any man but in God Himself, which is why it is also unchangeable. Moreover, they serve for His glory, and certainly, if for nothing else, then for His own glory God will fulfill His promises. How then will He fulfill them? "Through us," that is, through His benefactions toward us. For we who receive the promises give Him occasion to fulfill these promises. And if the promises of God are faithful, then all the more faithful is God Himself, and the word concerning Him is firm. The words "through us" can also be understood in another way, that is, to the glory of God offered up to Him through us, for He is glorified through us.
2 Cor. 1:21. Now He who establishes us with you in Christ and has anointed us is God,
2 Cor. 1:22. Who has also sealed us and given the pledge of the Spirit in our hearts.
Having said above that God will fulfill His promises, he now confirms this. That you and I, your teacher, stand firm in faith in Christ, he says, was given by God, Who also anointed us and sealed us, that is, made us prophets, kings, and priests. For such is every baptized person: he is a prophet, as one who sees what eye has not seen and ear has not heard; he is a priest, as one who must offer himself as a living sacrifice, holy and acceptable to God; he is a king, as a son of God the King and an heir of the coming Kingdom, and as one who even now reigns over improper thoughts and is set above the whole world. Just as in ancient times priests and kings were anointed with oil, so now we have been anointed with the Spirit, when God gave the pledge of the Spirit in our hearts. And if He gave a pledge, then He will certainly give everything. By "pledge" he means the gifts of the Spirit bestowed now; for we know in part and prophesy in part, but we shall receive what is perfect then, when Christ appears in His glory. Therefore, do not think that we make promises only so as not to appear liars. For it is not we who establish you, but God both promises and establishes both me and you; for He Himself will fulfill everything. Therefore understand also that God, Who does this and that, will Himself fulfill His promises.
2 Cor. 1:23. God I call as witness upon my soul, that it was in sparing you that I have not until now come to Corinth.
Above he said that he did not come to them because he did not have authority over himself and was not permitted by the Spirit. How then does he now say that he did not come in order to spare them? Because either this very thing happened by the will of the Spirit, that is, the Spirit suggested to him the thought of not going in order to spare them, or — at first the Spirit forbade him, and then he himself, having reasoned that this was better, remained. Note the wisdom of the apostle. While they were saying: you did not come because, it seems, you have come to hate us, he asserts the opposite: I did not come because I am sparing you. He says this because some among them were those who had sinned and not repented, whom he would have punished if, upon arriving, he had found them uncorrected. Therefore, he remained so as to come only when they had corrected themselves, and not have cause for punishment.
2 Cor. 1:24. Not that we lord it over your faith, but we are fellow workers for your joy,
Since what was said smacked of authority (for he who has the power to punish others can also spare them), he softens the harshness of his speech: I did not say that I am sparing you, he says, because I wished to lord it over your faith, for faith is a matter of free will and no one is compelled to believe against their will; but rather, considering your joy as my own joy, I did not come so as not to plunge you into sorrow and not to be grieved myself. For I do everything for your joy, and I stayed away so that by threat alone I might correct the sinners and cause you no grief whatsoever.
2 Cor. 1:24. For by faith you stand firm.
He converses with them gently, since in the first epistle he had already struck them sufficiently. His words mean the following: as far as the faith is concerned, you stand firm in it, and I had no reason to complain about you, but in other matters you wavered, and if you had not corrected yourselves and I had risen against you, I would have both grieved you and caused grief to myself.