2 Corinthians 12:11

11.I have become a fool Hitherto he had, by various apologies, solicited their forgiveness for what was contrary to his own custom and manner of acting, and contrary, also, to propriety, and what was due to his office as an Apostle — the publishing of his own praises. Now, instead of soliciting, he upbraids, throwing the blame upon the Corinthians, who ought to have been beforehand in this. (916) For when the false Apostles calumniated Paul, they should have set themselves vigorously in opposition to them, and should have faithfully borne the testimony that was due to his excellences. He chides them, however, thus early, lest those, who were unfavorably disposed towards them, should put a wrong construction upon the defense which he brought forward, in consequence of his being constrained to it by their ingratitude, (917) or should persist in calumniating him.

For in nothing We are ungrateful to God, if we allow his gifts, of which we are witnesses, to be disparaged, or contemned. He charges the Corinthians with this fault, for they knew him to be equal to thechiefest Apostles, and yet they lent an ear to calumniators, when they slandered him.

By the chiefest Apostles some understand his rivals, who arrogated to themselves the precedence. (918) I understand it, however, as meaning — those that were chief among the twelve. “Let me be compared with any one of the Apostles, (919) I have no fear, that I shall be found inferior.” For, although Paul was on the best of terms with all the Apostles, so that he was prepared to extol them above himself, he, nevertheless, contended against their names when falsely assumed. (920) For the false Apostles abused this pretext, that they had been in the company of the twelve — that they were in possession of all their views (921) — that they were fully acquainted with all their institutions, and the like. Hence Paul, perceiving that they falsely gloried in these masks and counterfeit titles, and were successful, to some extent, among unlearned persons, (922) reckoned it necessary to enter upon a comparison of that nature. (923)

The correction that he adds — though I am nothing, means, that Paul was not disposed to claim any thing as his own, but simply gloried in the Lord, (2 Corinthians 10:17,) unless, perhaps, you prefer to consider this as a concession, in which he makes mention of what is thrown out against him by adversaries and slanderers. (924)