Exodus 4:12

And He said, “Certainly I will be with you, and this shall be the sign to you that it is I who have sent you: when you have brought the people out of Egypt, you shall serve God at this mountain.”

“And you are to speak to him and put the words in his mouth; and I, even I, will be with your mouth and with his mouth, and I will instruct you in what you shall do.

And Moses said, “By this you shall know that Yahweh has sent me to do all these deeds; for this is not from my heart.

He sent Moses His servant, And Aaron, whom He had chosen.

Then Yahweh sent forth His hand and touched my mouth, and Yahweh said to me, “Behold, I have put My words in your mouth.

“Indeed, I brought you up from the land of Egypt And ransomed you from the house of slavery, And I sent before you Moses, Aaron, and Miriam.