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.
13. And he hardened Pharaoh's heart, that he hearkened not unto them; as the LORD had said.
14. And the LORD said unto Moses,
15. Get you unto Pharaoh in the morning; lo, he goes out unto the water; and you shall stand by the river's bank until he comes; and the rod which was turned to a serpent shall you take in your hand.
16. And you shall say unto him, The LORD God of the Hebrews has sent me unto you, saying, Let my people go, that they may serve me in the wilderness: and, behold, before you would not hear.
17. Thus says the LORD, In this you shall know
18. And the fish that are in the river shall die, and the river shall stink; and the Egyptians shall loathe to drink of the water of the river.
19. And the LORD spoke unto Moses,
20. And Moses and Aaron did so, as the LORD commanded; and he lifted up the rod, and smote the waters that were in the river, in the sight of Pharaoh, and in the sight of his servants; and all the waters that were in the river were turned to blood.
21. And the fish that were in the river died; and the river stank, and the Egyptians could not drink of the water of the river; and there was blood throughout all the land of Egypt.
22. And the magicians of Egypt did so with their enchantments: and Pharaoh's heart was hardened, neither did he hearken unto them; as the LORD had said.