Exodus 7:11-22

11Then Pharaoh summoned the wise men and the sorcerers, and they, the magicians of Egypt, also did the same by their secret arts.

12For each man cast down his staff, and they became serpents. But Aaron's staff swallowed up their staffs.

13Still Pharaoh's heart was hardened, and he would not listen to them, as the Lord had said.

14Then the Lord said to Moses, "Pharaoh's heart is hardened; he refuses to let the people go.

15Go to Pharaoh in the morning, as he is going out to the water. Stand on the bank of the Nile to meet him, and take in your hand the staff that turned into a serpent.

16And you shall say to him, 'The Lord, the God of the Hebrews, sent me to you, saying, "Let my people go, that they may serve me in the wilderness." But so far, you have not obeyed.

17Thus says the Lord, "By this you shall know that I am the Lord: behold, with the staff that is in my hand I will strike the water that is in the Nile, and it shall turn into blood.

18The fish in the Nile shall die, and the Nile will stink, and the Egyptians will grow weary of drinking water from the Nile."'"

19And the Lord said to Moses, "Say to Aaron, 'Take your staff and stretch out your hand over the waters of Egypt, over their rivers, their canals, and their ponds, and all their pools of water, so that they may become blood, and there shall be blood throughout all the land of Egypt, even in vessels of wood and in vessels of stone.'"

20Moses and Aaron did as the Lord commanded. In the sight of Pharaoh and in the sight of his servants he lifted up the staff and struck the water in the Nile, and all the water in the Nile turned into blood.

21And the fish in the Nile died, and the Nile stank, so that the Egyptians could not drink water from the Nile. There was blood throughout all the land of Egypt.

22But the magicians of Egypt did the same by their secret arts. So Pharaoh's heart remained hardened, and he would not listen to them, as the Lord had said.