14. And the LORD said to Moses, Pharaoh's heart is hardened; he refuseth to let the people go.
15. Go to Pharaoh in the morning; lo, he goeth out to the water, and thou shalt stand by the river's brink against he cometh; and the rod which was turned to a serpent shalt thou take in thy hand.
16. And thou shalt say to him, The LORD God of the Hebrews hath sent me to thee, saying, Let my people go, that they may serve me in the wilderness: and behold, hitherto thou wouldest not hear.
17. Thus saith the LORD, In this thou shalt know that I am the LORD: behold, I will smite with the rod that is in my hand upon the waters which are in the river, and they shall be turned to blood.