7. And Moses was fourscore years old, and Aaron fourscore and three years old, when they spoke unto Pharaoh.
8. And the LORD spoke unto Moses and unto Aaron, saying,
9. When Pharaoh shall speak unto you, saying, Show a miracle for proof: then you shall say unto Aaron, Take your rod, and cast it before Pharaoh, and it shall become a serpent.
10. And 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.
11. Then Pharaoh also called the wise men and the sorcerers: now the magicians of Egypt, they also did in like manner with their enchantments.
12. For they cast down every man his rod, and they became serpents: but Aaron's rod swallowed up their rods.