Exodus 4:14-17

New Revised Standard Version, Anglicised

¹⁴ Then the anger of the Lord was kindled against Moses and he said, ‘What of your brother Aaron the Levite? I know that he can speak fluently; even now he is coming out to meet you, and when he sees you his heart will be glad. ¹⁵ You shall speak to him and put the words in his mouth; and I will be with your mouth and with his mouth, and will teach you what you shall do. ¹⁶ He indeed shall speak for you to the people; he shall serve as a mouth for you, and you shall serve as God for him. ¹⁷ Take in your hand this staff, with which you shall perform the signs.’