2 Corinthians 10:9

9That I may not seem to terrify. Again he touches on the calumny which he had formerly refuted, (2 Corinthians 10:2,) that he was bold in his writings, while in their presence his courage failed him. On this pretext they disparaged his writings. (769) “What!” Said they, “will he terrify us by letters when at a distance, while, if present with us, he would scarcely venture to mutter a word!” Lest, therefore, his letters should have less weight, he answers, that no objection is advanced against him, that should either destroy or weaken his credit, and that of his doctrine, for deeds were not to be less valued than words. He was not less powerful in actions when present, than he was by words when absent. Hence it was unfair, that his bodily presence should be looked upon as contemptible. By deed, here, he means, in my opinion, the efficacy and success of his preaching, as well as the excellences that were worthy of an Apostle, and his whole manner of life. Speech, on the other hand, denotes — not the very substance of doctrine, but simply the form of it, and the bark, so to speak: for he would have contended for doctrine with greater keeness. The contempt, however, proceeded from this — that he was deficient in that ornament and splendor of eloquence, which secures favor. (770)