Exodus 7:17

¹⁵Go to Pharaoh early in the morning: behold, he goes forth to the water; and thou shalt meet him on the bank of the river, and thou shalt take in thy hand the rod that was turned into a serpent.

¹⁶And thou shalt say to him, The Lord God of the Hebrews has sent me to thee, saying, Send my people away, that they may serve me in the wilderness, and, behold, hitherto thou hast not hearkened.

— Exodus 7:17 —

¹⁸And the fish that are in the river shall die, and the river shall stink thereupon, and the Egyptians shall not be able to drink water from the river.

¹⁹And the Lord said to Moses, Say to thy brother Aaron, Take thy rod in thy hand, and stretch forth thy hand over the waters of Egypt, and over their rivers, and over their canals, and over their ponds, and over all their standing water, and it shall become blood: and there was blood in all the land of Egypt, both in vessels of wood and of stone.