I LOVE this dialog.
(from Exodus 4, all emphasis mine)
What a patient God we serve!
Moses: "I am not eloquent, neither before nor since You have spoken to Your servant; but I am slow of speech and slow of tongue."
God: "WHO has made man's mouth?! Now therefore, go. I will be with your mouth and teach you what you shall say."
Moses: "O my Lord, please send by the hand of whomever ELSE You may send." : ) (I'm pretty sure I've said that)
God: "Is not Aaron the Levite your brother? I know that he can speak well." (that makes me smile)
"And I will be with your mouth and with his mouth, and I will teach you what you shall do."
Me: "Oh, Lord be with my mouth, in Jesus' name, Amen!"