Exodus 7:20-22

Lexham English Bible

²⁰ And Moses and Aaron did so, as Yahweh had commanded, and he raised the staff and struck the water that was in the Nile before the eyes of Pharaoh and before the eyes of his servants, and all of the water that was in the Nile was changed to blood. ²¹ And the fish that were in the Nile died, and the Nile stank, and the Egyptians were not able to drink water from the Nile, and the blood was in all the land of Egypt.

²² And the magicians of Egypt did likewise with their secret arts, and Pharaoh’s heart was hard, and he did not listen to them, as Yahweh had spoken.