Bible Verses About Preaching: Moses, slow of speech

Moses said to the LORD, “O Lord, I am not eloquent, neither before now, nor since you have spoken to your servant; for I am slow of speech, and of a slow tongue.”

The LORD said to him, “Who made man’s mouth? Or who makes one mute, or deaf, or seeing, or blind? Isn’t it I, the LORD?

Now therefore go, and I will be with your mouth, and teach you what you shall speak.”