Exodus 7:20-22

Amplified Bible, Classic Edition

²⁰ Moses and Aaron did as the Lord commanded; [Aaron] lifted up the rod and smote the waters in the river in the sight of Pharaoh and his servants, and all the waters in the river were turned to blood.

²¹ And the fish in the river died; and the river became foul smelling, and the Egyptians could not drink its water, and there was blood throughout all the land of Egypt.

²² But the magicians of Egypt did the same by their enchantments and secret arts; and Pharaoh’s heart was made hard and obstinate, and he did not listen to Moses and Aaron, just as the Lord had said.