Cross reference
Exodus 4:10
10 And Moses said unto the LORD, O my LORD, I am not eloquent, neither heretofore, nor since thou hast spoken unto thy servant: but I am slow of speech, and of a slow tongue.
Exodus 6:12
12 And Moses spake before the LORD, 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
6 Then said I, Ah, Lord GOD! behold, I cannot speak: for I am a child.
Acts 7:22
22 And Moses was learned in all the wisdom of the Egyptians, and was mighty in words and in deeds.
Exodus 4:1
1 And Moses answered and said, But, behold, they will not believe me, nor hearken unto my voice: for they will say, The LORD hath not appeared unto thee.
2 Corinthians 11:6
6 But though I be rude in speech, yet not in knowledge; but we have been throughly made manifest among you in all things.
Job 12:2
2 No doubt but ye are the people, and wisdom shall die with you.
1 Corinthians 2:1-4
1 And I, brethren, when I came to you, came not with excellency of speech or of wisdom, declaring unto you the testimony of God.
2 For I determined not to know any thing among you, save Jesus Christ, and him crucified.
3 And I was with you in weakness, and in fear, and in much trembling.
4 And my speech and my preaching was not with enticing words of man's wisdom, but in demonstration of the Spirit and of power:
2 Corinthians 10:10
10 For his letters, say they, are weighty and powerful; but his bodily presence is weak, and his speech contemptible.