In Context

14 And the LORD said to Moses, Pharaoh's heart is hardened, he refuses to let the people go.

15 Get you to Pharaoh in the morning; see, he goes out to the water; and you shall stand by the river's brink against he come; and the rod which was turned to a serpent shall you take in your hand.

16 And you shall say to him, The LORD God of the Hebrews has sent me to you, saying, Let my people go, that they may serve me in the wilderness: and, behold, till now you would not hear.

17 Thus said the LORD, In this you shall know that I am the LORD: behold, I will smite with the rod that is in my hand on the waters which are in the river, and they shall be turned to blood.

18 And the fish that is in the river shall die, and the river shall stink; and the Egyptians shall loathe to drink of the water of the river.

19 And the LORD spoke to Moses, Say to Aaron, Take your rod, and stretch out your hand on the waters of Egypt, on their streams, on their rivers, and on their ponds, and on all their pools of water, that they may become blood; and that there may be blood throughout all the land of Egypt, both in vessels of wood, and in vessels of stone.

Exodus 7:17 in Other Translations