Exodus 6:30

But Moses replied in the Lord’s presence, “Since I am such a poor speaker, how will Pharaoh listen to me?”

Exodus 6:12

But Moses said in the Lord’s presence: “If the Israelites will not listen to me, then how will Pharaoh listen to me, since I am such a poor speaker?”

Exodus 4:10

But Moses replied to the Lord, “Please, Lord, I have never been eloquent—either in the past or recently or since You have been speaking to Your servant—because I am slow and hesitant in speech.”

1 Corinthians 9:16-17

For if I preach the gospel, I have no reason to boast, because an obligation is placed on me. And woe to me if I do not preach the gospel!

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