Exodus 4:15-17

New Revised Standard Version, Anglicised Catholic Edition

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.’