Exodus 7:16-18

New Revised Standard Version, Anglicised Catholic Edition

¹⁶ Say to him, “The Lord, the God of the Hebrews, sent me to you to say, ‘Let my people go, so that they may worship me in the wilderness.’ But until now you have not listened. ¹⁷ Thus says the Lord, ‘By this you shall know that I am the Lord.’ See, with the staff that is in my hand I will strike the water that is in the Nile, and it shall be turned to blood. ¹⁸ The fish in the river shall die, the river itself shall stink, and the Egyptians shall be unable to drink water from the Nile.”’