Exodus 4:10
Then Moses said to the Lord, "O my Lord, I am not an eloquent man, neither in the past nor since you have spoken to your servant, for I am slow of speech and slow of tongue."
Exodus 6:12
But Moses replied to the Lord, "If the Israelites did not listen to me, then how will Pharaoh listen to me, since I speak with difficulty?"
Jeremiah 1:6
I answered, "Oh, Lord God, I really do not know how to speak well enough for that, for I am too young."
Exodus 4:1
Moses answered again, "And if they do not believe me or pay attention to me, but say, 'The Lord has not appeared to you'?"
Acts 7:22
So Moses was trained in all the wisdom of the Egyptians and was powerful in his words and deeds.
Job 12:2
"Without a doubt you are the people, and wisdom will die with you.
1 Corinthians 2:1-4
When I came to you, brothers and sisters, I did not come with superior eloquence or wisdom as I proclaimed the testimony of God.
2 Corinthians 10:10
because some say, "His letters are weighty and forceful, but his physical presence is weak and his speech is of no account."
2 Corinthians 11:6
And even if I am unskilled in speaking, yet I am certainly not so in knowledge. Indeed, we have made this plain to you in everything in every way.