Exodus 7:10-12

10So Moses and Aaron went to see Pharaoh. They did everything that the Lord had commanded them. Aaron threw down his stick in front of Pharaoh and his officers. And the stick became a snake!

11Then Pharaoh called for his wise men and his magicians to come to him. The Egyptian magicians did the same thing as Aaron. They used their secret magic to do it.

12Each of them threw down his stick and it became a snake. But Aaron's stick ate all their sticks!