Exodus 4:10-14

But Moses said to the LORD, “Please, Lord, I have never been a skilled speaker. Even now, after talking to you, I cannot speak well. I speak slowly and can’t find the best words.” Then the LORD said to him, “Who made a person’s mouth? And who makes someone deaf or not able to speak? Or who gives a person sight or blindness? It is I, the LORD. Now go! I will help you speak, and I will teach you what to say.” But Moses said, “Please, Lord, send someone else.” The LORD became angry with Moses and said, “Your brother Aaron, from the family of Levi, is a skilled speaker. He is already coming to meet you, and he will be happy when he sees you.