Psalms 78:44

²⁹He turned their waters into blood, and killed their fish.

³The second angel poured out his bowl into the sea, and it became blood as of a dead man. Every living thing in the sea died.

⁴The third poured out his bowl into the rivers and springs of water, and they became blood. ⁵I heard the angel of the waters saying, “You are righteous, who are and who were, O Holy One, because you have judged these things. ⁶For they poured out the blood of saints and prophets, and you have given them blood to drink. They deserve this.”

¹⁷The LORD says, “In this you shall know that I am the LORD. Behold: I will strike with the rod that is in my hand on the waters which are in the river, and they shall be turned to blood. ¹⁸The fish that are in the river will die and the river will become foul. The Egyptians will loathe to drink water from the river.”’” ¹⁹The LORD said to Moses, “Tell Aaron, ‘Take your rod, and stretch out your hand over the waters of Egypt, over their rivers, over their streams, and over their pools, and over all their ponds of water, that they may become blood. There will be blood throughout all the land of Egypt, both in vessels of wood and in vessels of stone.’”

²⁰Moses and Aaron did so, as the LORD commanded; and he lifted up the rod, and struck 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. ²¹The fish that were in the river died. The river became foul. The Egyptians couldn’t drink water from the river. The blood was throughout all the land of Egypt.