Exodus 4:10
And Moses said to Jehovah, Ah Lord! I am not eloquent, neither heretofore nor since thou hast spoken to thy servant, for I am slow of speech and of a slow tongue.
Exodus 6:12
And Moses spoke before Jehovah, saying, Lo, the children of Israel do not hearken to me: how then should Pharaoh hearken to me, to me of uncircumcised lips?
Jeremiah 1:6
And I said, Alas, Lord Jehovah! behold, I cannot speak; for I am a child.
Exodus 4:1
And Moses answered and said, But behold, they will not believe me, nor hearken unto my voice; for they will say, Jehovah has not appeared to thee.
Acts 7:22
And Moses was instructed in all the wisdom of the Egyptians, and he was mighty in his words and deeds.
Job 12:2
Truly ye are the people, and wisdom shall die with you!
1 Corinthians 2:1-4
And I, when I came to you, brethren, came not in excellency of word, or wisdom, announcing to you the testimony of God.
2 Corinthians 10:10
because his letters, he says, are weighty and strong, but his presence in the body weak, and his speech naught.
2 Corinthians 11:6
But if I am a simple person in speech, yet not in knowledge, but in everything making the truth manifest in all things to you.