Exodus 4:10
And Moses said to Jehovah, O my Lord, I am not a man of words now, nor since You have spoken to Your servant, but I am slow of speech and of a slow tongue.
Exodus 6:12
And Moses spoke before Jehovah, saying, Behold, the sons of Israel have not listened to me. How then shall Pharaoh hear me, since I have lips that are not circumcised?
Jeremiah 1:6
Then I said, Alas, Lord Jehovah! Behold, I do not know to speak; for I am a boy.
Exodus 4:1
And Moses answered and said, But, behold, they will not believe me nor listen to my voice. For they will say, Jehovah has not appeared to you.
Acts 7:22
And Moses was learned in all the wisdom of the Egyptians and was mighty in words and in deeds.
Job 12:2
For truly you are the people, and wisdom will die with you.
1 Corinthians 2:1-4
And I, brothers, when I came to you, did not come with excellency of speech or of wisdom, declaring to you the testimony of God.
2 Corinthians 10:10
For indeed they say, the letters are weighty and powerful, but the bodily presence is weak, and his speech is contemptible.
2 Corinthians 11:6
But even if I am unskilled in speech, yet not in knowledge; but in every way I have been clearly revealed to you in all things.