Exodus 4:17

4:17 You will also take in your hand this staff, with which you will do the signs.”

Exodus 4:28

4:28 Moses told Aaron all the words of the Lord who had sent him and all the signs that he had commanded him.

Exodus 4:30

4:30 Aaron spoke all the words that the Lord had spoken to Moses and did the signs in the sight of the people,