nkjv Exodus:7:16-17
nkjv@Exodus:7:16 @ 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"; but indeed, until now you would not hear!
nkjv@Exodus:7:17 @ Thus says the LORD: "By this you shall know that I am the LORD. Behold, I will strike the waters which are in the river with the rod that is in my hand, and they shall be turned to blood.