Exodus 7:16

16 You shall tell 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, until now you haven't listened.

Exodus 7:16 In-Context

14 The LORD said to Moshe, "Par`oh's heart is stubborn. He refuses to let the people go.
15 Go to Par`oh in the morning. Behold, he goes out to the water; and you shall stand by the river's bank to meet him; and the rod which was turned to a serpent you shall take in your hand.
16 You shall tell 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, until now you haven't listened.
17 Thus says the LORD, "In this you shall know that I am the LORD. Behold, I will strike with the rod that is in my hand on the waters which are in the river, and they shall be turned to blood.
18 The fish that are in the river shall die, and the river shall become foul; and the Mitzrim shall loathe to drink water from the river."'"
The Hebrew Names Version is in the public domain.