Exodus 4:10-17

Then Moses said to the LORD, “Please, Lord, I have never been eloquent, neither recently nor in time past, nor since You have spoken to Your servant; for I am slow of speech and slow of tongue.” The LORD said to him, “Who has made man’s mouth? Or who makes him mute or deaf, or seeing or blind? Is it not I, the LORD? Now then go, and I, even I, will be with your mouth, and teach you what you are to say.” But he said, “Please, Lord, now send the message by whomever You will.” Then the anger of the LORD burned against Moses, and He said, “Is there not your brother Aaron the Levite? I know that he speaks fluently. And moreover, behold, he is coming out to meet you; when he sees you, he will be glad in his heart. You are to speak to him and put the words in his mouth; and I, even I, will be with your mouth and his mouth, and I will teach you what you are to do. Moreover, he shall speak for you to the people; and he will be as a mouth for you and you will be as God to him. You shall take in your hand this staff, with which you shall perform the signs.”