Exodus 7:10-12

¹⁰Then Moses and Aaron went in to Pharaoh and they did as the Lord had said: and Aaron put his rod down on the earth before Pharaoh and his servants, and it became a snake.

¹¹Then Pharaoh sent for the wise men and the wonder-workers, and they, the wonder-workers of Egypt, did the same with their secret arts.

¹²For every one of them put down his rod on the earth, and they became snakes: but Aaron's rod made a meal of their rods.