Exodus 7:11-13

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!

13But Pharaoh's mind was hard and he refused to listen to Moses and Aaron. That was what the Lord had said would happen, and it did!