Exodus 7:20-22

Young's Literal Translation

²⁰ And Moses and Aaron do so, as Jehovah hath commanded, and he lifteth up [his hand] with the rod, and smiteth the waters which [are] in the River, before the eyes of Pharaoh, and before the eyes of his servants, and all the waters which [are] in the River are turned to blood,

²¹ and the fish which [is] in the River hath died, and the River stinketh, and the Egyptians have not been able to drink water from the River; and the blood is in all the land of Egypt.

²² And the scribes of Egypt do so with their flashings, and the heart of Pharaoh is strong, and he hath not hearkened unto them, as Jehovah hath spoken,