'Serpent' in the Bible

"When Pharaoh says to you, "Perform a miraculous sign,' then you are to say to Aaron, "Take your staff and throw it in front of Pharaoh.' It will become a serpent."

So Moses and Aaron went in to Pharaoh and did what the LORD had commanded them. Aaron threw his staff in front of Pharaoh and his officials, and it became a serpent.

So each one threw down his staff and it became a serpent, but Aaron's staff swallowed up their staffs.