Exodus 7:10-12

¹⁰And Moses and Aaron went in unto Pharaoh, and they did so, as the LORD had commanded; and Aaron cast down his rod before Pharaoh and before his servants, and it became a serpent.

¹¹Then Pharaoh also called for the wise men and the sorcerers; and they also, the magicians of Egypt, did in like manner with their secret arts.

¹²For they cast down every man his rod, and they became serpents; but Aaron's rod swallowed up their rods.