Exodus 7:20-21 ▼

20 So Moses and Aaron did thus, as Yahweh had commanded. And he raised up the staff and struck the water that was in the Nile, in the sight of Pharaoh and in the sight of his servants, and all the water that was in the Nile was turned to blood.

21 And the fish that were in the Nile died, and the Nile became foul, so that the Egyptians could not drink water from the Nile. And the blood was through all the land of Egypt.