As also you have known us in part, that we are your glory, as you also are ours, in the day of our Lord Jesus Christ.

“"For we write none other things unto you, than what ye read or even acknowledge." For since he spoke great things of himself and seemed to be bearing witness to himself, an odious thing, he again appeals to them as witnesses of what he says. For, he saith, let no one think that what I say is a boastful flourish of writing; for we declare unto you what yourselves know; and that we lie not ye more than all others can bear us witness. For, when ye read, ye acknowledge that what ye know that we perform in our actions, this we say also in our writings, and your testimony doth not contradict our epistles; but the knowledge which ye had before of us is in harmony with your reading. "As also ye did acknowledge us in part." For your knowledge of us, he saith, is not from hearsay but from actual experience. The words "in part" he added from humility. For this is his wont, when necessity constraineth him to say any high-sounding thing, (for he never doth so otherwise,) as desiring quickly to repress again the elation arising from what he had said. "And I hope ye will acknowledge even to the end." Seest thou again how from the past he draws pledges for the future; and not from the past only, but also from the power of God? For he affirmed not absolutely, but cast the whole upon God and his hope in Him. "That we are your glorying, even as ye also are ours, in the day of our Lord Jesus Christ." Here he cuts at the root of the envy that his speech might occasion, by making them sharers and partners in the glory of his good works. "For these stick not with us, but pass over unto you also, and again from you to us." For seeing he had extolled himself, and produced proof of the past and given security for the future; lest his hearers should reflect on him for talking proudly, or be hurried to enviousness, he makes the rejoicing a common one and declares that this crown of praises is theirs.”

“Having set forth the consolation given to the apostle by God after persecution, here he consequently assigns the cause of the consolation, which concerns the hope of divine help. And concerning this he does two things. First, he sets forth the cause of hope; second, he adduces for this the testimony of those to whom he writes, at the place "for not other things," etc. He says therefore: I say that we still hope to be delivered by the Lord and consoled, for our glory, etc. — as if to say: the cause of this is our good conscience. For hope is the expectation of future things, arising from grace and merits. Hence concerning this he does three things. First, he shows the glory which he has from the testimony of a pure conscience; second, he intimates the cause of this glory, at the place "that in simplicity"; third, he makes clear from where this cause proceeds, at the place "and not in fleshly wisdom." He says therefore: I hope and trust in God for this reason, because our glory — that is, I glory from the testimony and purity of our conscience, from which one can confidently trust in God. 1 John 3:20: "if our heart reprehend us," etc. Romans 8:16: "the Spirit himself, testimony," etc. Now it must be noted that the testimony of conscience is true, because it does not deceive. For many appear good outwardly who are not good in their own conscience. And it always endures. But he does not say "of the conscience of others" but "of ours," because a man ought always to rely more on the testimony of his own conscience about himself than on the testimony of others; which those do not do who reckon themselves good from the fact that others are evil, not from the fact that they themselves are truly good; and those who glory in the goodness of some good man who is joined to them by some kinship. Now he intimates the cause of this glory, saying, "that in simplicity," etc.; which consists in two things. For the purity of conscience consists in two things: namely, that the things one does be good, and that the intention of the one doing them be right, and the apostle says these two things of himself. First, that he has a right intention toward God in his works, and therefore he says "in simplicity," that is, in rectitude of intention. Wisdom 1:1: "in simplicity of heart," etc. Proverbs 11:3: "the simplicity of the just," etc. Second, that the things he does are good, and therefore he says "and in sincerity of action." Philippians 1:10: "that you may be sincere and without offense." But whence the cause of this glory proceeds, he makes clear by adding, "but not in the wisdom of the flesh." This can be read in two ways. First, so that it is referred to what immediately precedes, namely "of God"; and then it is suggestive of whence his sincerity and simplicity come; as if to say: many of the ancients were wise in earthly wisdom, like the philosophers, and many Jews lived purely, trusting in the justice of the law, but we have conducted ourselves in this world not in fleshly wisdom, which is according to the natures of things, or the desires of the flesh, but in the grace of God. Romans 8:6: "the prudence of the flesh is death," etc. 1 Corinthians 2:4: "not in the persuasive words of human wisdom," etc. 1 Corinthians 15:10: "by the grace of God I am what I am." Or also, according to this manner, "not in wisdom," etc., that is, as if leaning upon human wisdom, but upon the grace of God. Proverbs 3:5: "lean not upon your own prudence." In another way it can be explained, so that what he says, "in simplicity," etc., is referred to purity of life; but what he says, "not in wisdom," etc., is referred to the truth of doctrine, as if to say: just as our life is in simplicity and sincerity of God, so our doctrine is not in fleshly wisdom, but in the grace of God. But nevertheless the first two are the stronger. And although we have thus conducted ourselves well in this world, yet more abundantly toward you, because namely he had received support from other churches, but not from them. Below, 11:8: "I have despoiled other churches." And the reason for this can be that they were avaricious, hence, lest he should grieve them, he did not wish to receive support from them. Consequently he invokes their testimony to this holy conduct of his, saying "for not other things," etc., as if to say: these things which we write to you are not unknown to you, because you have already read them in the first epistle, and you have known them through the experience of works. 1 John 2:7: "not a new commandment." And although you have not known perfectly, because you have procured for yourselves false apostles, yet I hope that even to the end, namely of life, you will know, namely perfectly, just as up to now you have known us in part. The reason for this is that when someone sees another begin something well, he ought to hope that he will always progress well. And why? Because "he who has begun a good work in you," etc., as is said in Philippians 1:6. And you will know, that we are your glory, that is, through us you ought to attain eternal glory, to which a man arrives through faith in Christ, which we preach to you. Proverbs 17:6: "the glory of children are their fathers." Thus I say we are your glory, just as you also are our glory, because through you, instructed by us, we hope to have the reward of eternal glory. 1 Thessalonians 2:19: "what is our hope, or crown of our glory? Is it not you?" And this glory will be ours from you, in the day of our Lord Jesus Christ, that is, in the day of judgment, which is called Christ's, because then he will do his own will with sinners, punishing those who in this world did their own will, sinning against the will of Christ the Lord. Psalm 74:3: "when I shall take a time, I will judge justices," etc. Apocalypse 20:12: "the books were opened," etc.”

“As also you have acknowledged us in part,.... This may refer either to the thing known and acknowledged, namely, the integrity of the apostle's conversation, and others; which though they did not know thoroughly and perfectly, yet did in part, and that so far as that they might acquit them from the charge brought against them; or to the persons who knew this, as that there were some in the church of Corinth, a part of them, though not all, who knew and had acknowledged them to be upright and sincere ministers of the word, and had declared that they had reason to rejoice and bless God that ever they heard them: and that we are your rejoicing: or "glorying in", or "unto the day of the Lord Jesus": when he shall come to judge the world in righteousness, then they should before him, angels and men, rejoice and glory in this, that they had been blessed with such sincere and faithful ministers, who sought not any worldly advantage, but the glory of Christ, and the salvation of souls: even as, adds the apostle, ye also are ours; we do now, and so we shall then, rejoice and glory in this, that our labour among you was not in vain, but was blessed for your conversion and edification.”

“Have acknowledged us in part - Απο μερους may signify here not in part, but some of you; and it is evident, from the distracted state of the Corinthians, and the opposition raised there against the apostle, that it was only a part of them that did acknowledge him, and receive and profit by his epistles and advice. We are your rejoicing, etc. - You boast of us as the ministers of Christ through whom ye have believed; as we boast of you as genuine converts to the Christian faith, and worthy members of the Church of God.”

“in part--In contrast to "even to the end": the testimony of his life was not yet completed [THEOPHYLACT and BENGEL]. Rather, "in part," that is, some of you, not all [GROTIUS, ALFORD]. So in Co2 2:5; Rom 11:25. The majority at Corinth had shown a willing compliance with Paul's directions in the first Epistle: but some were still refractory. Hence arises the difference of tone in different parts of this Epistle. See Introduction. your rejoicing--your subject of glorying or boast. "Are" (not merely shall be) implies the present recognition of one another as a subject of mutual glorying: that glorying being about to be realized in its fulness "in the day (of the coming) of the Lord Jesus."”