2 Corinthians 10:10
because some say, "His letters are weighty and forceful, but his physical presence is weak and his speech is of no account."
1 Corinthians 1:17
For Christ did not send me to baptize, but to preach the gospel -- and not with clever speech, so that the cross of Christ would not become useless.
2 Corinthians 11:6
And even if I am unskilled in speaking, yet I am certainly not so in knowledge. Indeed, we have made this plain to you in everything in every way.
Galatians 4:13-14
But you know it was because of a physical illness that I first proclaimed the gospel to you,
Exodus 4:10
Then Moses said to the Lord, "O my Lord, I am not an eloquent man, neither in the past nor since you have spoken to your servant, for I am slow of speech and slow of tongue."
Jeremiah 1:6
I answered, "Oh, Lord God, I really do not know how to speak well enough for that, for I am too young."
1 Corinthians 1:21
For since in the wisdom of God the world by its wisdom did not know God, God was pleased to save those who believe by the foolishness of preaching.
1 Corinthians 2:1-4
When I came to you, brothers and sisters, I did not come with superior eloquence or wisdom as I proclaimed the testimony of God.
2 Corinthians 10:1
Now I, Paul, appeal to you personally by the meekness and gentleness of Christ (I who am meek when present among you, but am full of courage toward you when away!) --
2 Corinthians 12:5-9
On behalf of such an individual I will boast, but on my own behalf I will not boast, except about my weaknesses.