12. For they cast down every man his rod and they became serpents; but Aaron's rod swallowed up their rods.
13. But Pharaoh's heart was hardened and stubborn and he would not listen to them, just as the Lord had said.
14. Then the Lord said to Moses, Pharaoh's heart is hard and stubborn; he refuses to let the people go.
15. Go to Pharaoh in the morning; he will be going out to the water; wait for him by the river's brink; and the rod which was turned to a serpent you shall take in your hand.
16. And say to him, The Lord, the God of the Hebrews has sent me to you, saying, Let My people go, that they may serve Me in the wilderness; and behold, heretofore you have not listened.
17. Thus says the Lord, In this you shall know, recognize, and understand that I am the Lord: behold, I will smite with the rod in my hand the waters in the [Nile] River, and they shall be turned to blood.