4But Pharaoh shall not listen to you, so that I may lay my hand upon Egypt, and bring forth my armies, and my people the children of Israel, out of the land of Egypt by great judgments.
5And the Egyptians shall know that I am the LORD, when I stretch forth my hand upon Egypt, and bring out the children of Israel from among them.
6And Moses and Aaron did as the LORD commanded them, so they did.
7And Moses was eighty years old, and Aaron eighty-three years old, when they spoke to Pharaoh.
8And the LORD spoke to Moses and to Aaron, saying,
9When Pharaoh shall speak to you, saying, Show a miracle for you, then you shall say to Aaron, Take your rod, and cast it before Pharaoh, and it shall become a serpent.
10And Moses and Aaron went to 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.