Cross reference
Exodus 4:10
10 And Moses said to the Lord, O Lord, I am not a man of words; I have never been so, and am not now, even after what you have said to your servant: for talking is hard for me, and I am slow of tongue.
Exodus 6:12
12 And Moses, answering the Lord, said, See, the children of Israel will not give ear to me; how then will Pharaoh give ear to me, whose lips are unclean?
Jeremiah 1:6
6 Then said I, O Lord God! see, I have no power of words, for I am a child.
Acts 7:22
22 And Moses was trained in all the wisdom of Egypt, and was great in his words and works.
Exodus 4:1
1 And Moses, answering, said, It is certain that they will not have faith in me or give ear to my voice; for they will say, You have not seen the Lord.
2 Corinthians 11:6
6 But though I am rough in my way of talking, I am not so in knowledge, as we have made clear to all by our acts among you.
Job 12:2
2 No doubt you have knowledge, and wisdom will come to an end with you.
1 Corinthians 2:1-4
1 And when I came to you, my brothers, I did not come with wise words of knowledge, putting before you the secret of God.
2 For I had made the decision to have knowledge of nothing among you but only of Jesus Christ on the cross.
3 And I was with you without strength, in fear and in doubt.
4 And in my preaching there were no honeyed words of wisdom, but I was dependent on the power of the Spirit to make it clear to you:
2 Corinthians 10:10
10 For his letters, they say, have weight and are strong; but in body he is feeble, and his way of talking has little force.