Ambrosiaster : This does not refer to the apostles, who were unlettered men of no eloquence, but to the false teachers whose rhetorical skill the Corinthians preferred. Paul did not mean by this that he did not know how to speak but that commendation did not depend on mere eloquence. A person of little eloquence is not guilty before God, but someone who does not know God is liable to be charged with ignorance, because it was a sin to be ignorant of what is conducive to salvation. It was not eloquence which would commend Paul's message but the power to save which accompanied it. — COMMENTARY ON PAUL'S EPISTLES Clement of Alexandria : The primacy of knowledge the apostle shows to those capable of reflection, in writing to those Greeks of Corinth, in the following terms: "But having hope, when your faith is increased, that we shall he magnified in you according to our rule abundantly, to preach the Gospel beyond you." He does not mean the extension of his preaching locally: for he says also that in Achaia faith abounded; and it is related also in the Acts of the Apostles that he preached the word in Athens. But he teaches that knowledge, which is the perfection of faith, goes beyond catechetical instruction, in accordance with the magnitude of the Lord's teaching and the rule of the Church. Wherefore also he proceeds to add, "And if I am rude in speech, yet I am not in knowledge." — The Stromata Book 6 Jerome : Paul was learned in Hebrew letters and sat at the feet of Gamaliel, whom he was not ashamed to acknowledge, but he showed a contempt for Greek eloquence, or at least he kept quiet about it because of his humility, so that his preaching lay not in the persuasiveness of his words but in the power of his signs. — Against Rufinus 1.17 John Chrysostom : "But though I be rude in speech, yet am I not in knowledge." For since those that corrupted the Corinthians had the advantage in this, that they were not rude; he mentions this also, showing that he was not ashamed of, but even prided himself upon it. And he said not, "But though I be rude in speech," yet so also are they, for this would have seemed to be accusing them as well as himself, and exalting these: but he overthrows the thing itself, the wisdom from without. And indeed in his former Epistle he contends even vehemently about this thing, saying that it not only contributes nothing to the Preaching, but it even throws a shadow on the glory of the Cross; for he says, "I came not with excellency of speech or of wisdom unto you, lest the cross of Christ should be made void;" and many other things of the same kind; because "in knowledge" they were "rude," which is also the extremest form of rudeness. When therefore it was necessary to institute a comparison in those things which were great, he compares himself with the Apostles: but when to show that which appeared to be a deficiency, he no longer does this, but grapples with the thing itself and shows that it was a superiority. And when indeed no necessity urged him, he says that he is "the least of the Apostles," and not worthy even of the title; but here again when occasion called, he says that he is "not a whit behind the very chiefest Apostles." For he knew that this would most advantage the disciples. Wherefore also he adds, "Nay, in every thing we have made it manifest among all men to you ward." For here again he accuses the false Apostles as "walking in craftiness." And he said this of himself before also, that he did not live after the outward appearance, nor preach "handling the word deceitfully and corrupting it. But those men were one thing and appeared another. But not so he. Wherefore also he every where assumes a high tone, as doing nothing with a view to men's opinion nor concealing aught about himself. As he also said before, "by the manifestation of the truth commending ourselves to every man's conscience," so now again he saith "in every thing we have made it manifest to you." But what does this mean? "We are rude," he said, "and do not conceal it: we receive from some persons and we do not keep it secret. We receive then from you, and we pretend not that we do not receive, as they do when they receive, but we make every thing that we do manifest unto you;" which was the conduct of one that both had exceeding confidence in them, and told them every thing truly. — Homily 23 on 2 Corinthians Philoxenus of Mabbug : For the wisdom of God flourisheth not by these things, that is the study and care of earthly thoughts, but all its meditation is upon spiritual things, and its motions and thoughts are above the world, even as the Apostle himself testified concerning himself, "I am a fool to the wisdom of the world, but by my knowledge I possess the wisdom which is above the world." — 13 Ascetic Discourses, Discourse 4 -- On Faith: First Discourse on Simplicity