2 Corinthians 10:10
because, "His letters, indeed," says one, "are weighty and strong, but his bodily presence is weak, and his speech contemptible."
1 Corinthians 1:17
For Christ sent me not to immerse, but to proclaim the Gospel; not in wisdom of speech, lest the cross of Christ should be made void.
2 Corinthians 11:6
And, though I be rude in speech, yet am I not rude in knowledge; but in every way having manifested it toward you in all things.
Galatians 4:13-14
but ye know that through weakness of the flesh I proclaimed the Gospel to you formerly;
1 Corinthians 1:21
For, since in the wisdom of God, the world through its wisdom knew not God, God was pleased through the foolishness of preaching to save those who believe;
1 Corinthians 2:1-4
And I, brethren, when I came to you, came not with excellency of speech or of wisdom, proclaiming to you the testimony of God;
2 Corinthians 10:1
Now I, Paul, myself entreat you, through the meekness and gentleness of Christ, who in your presence, indeed, am lowly among you; but, being absent, am bold toward you;
2 Corinthians 12:5-9
On behalf of such a one I will glory; but on my own behalf I will not glory, except in my weaknesses.