Exodus 4:10
And Moses said unto Jehovah, Oh, Lord, I am not eloquent, neither heretofore, nor since thou hast spoken unto thy servant; for I am slow of speech, and of a slow tongue.
Exodus 6:12
And Moses spake before Jehovah, saying, Behold, the children of Israel have not hearkened unto me; how then shall Pharaoh hear me, who am of uncircumcised lips?
Jeremiah 1:6
Then said I, Ah, Lord Jehovah! behold, I know not how to 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 hath not appeared unto thee.
Acts 7:22
And Moses was instructed in all the wisdom of the Egyptians; and he was mighty in his words and works.
Job 12:2
No doubt but ye are the people, And wisdom shall die with you.
1 Corinthians 2:1-4
And I, brethren, when I came unto you, came not with excellency of speech or of wisdom, proclaiming to you the testimony of God.
2 Corinthians 10:10
For, His letters, they say, are weighty and strong; but his bodily presence is weak, and his speech of no account.
2 Corinthians 11:6
But though I be rude in speech, yet am I not in knowledge; nay, in every way have we made this manifest unto you in all things.