Exodus 7:21-23

Darby Translation

²¹ And the fish that was in the river died; and the river stank, and the Egyptians could not drink the water of the river; and the blood was throughout the land of Egypt.

²² And the scribes of Egypt did so with their sorceries; and Pharaoh's heart was stubborn, neither did he hearken to them, as Jehovah had said.

²³ And Pharaoh turned and went into his house, and took not this to heart either.