Exodus 4:10-16

But Moses said, “No, LORD, don't send me. I have never been a good speaker, and I haven't become one since you began to speak to me. I am a poor speaker, slow and hesitant.” The LORD said to him, “Who gives man his mouth? Who makes him deaf or dumb? Who gives him sight or makes him blind? It is I, the LORD. Now, go! I will help you to speak, and I will tell you what to say.” But Moses answered, “No, Lord, please send someone else.” At this the LORD became angry with Moses and said, “What about your brother Aaron, the Levite? I know that he can speak well. In fact, he is now coming to meet you and will be glad to see you. You can speak to him and tell him what to say. I will help both of you to speak, and I will tell you both what to do. He will be your spokesman and speak to the people for you. Then you will be like God, telling him what to say.