Thus saith the LORD. See note on Exodus 4:22.
river. Probably the Nile canals.
Related Commentaries of Exodus 7:17
Exodus 7:17
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 mine hand upon the waters which are in the river, and they shall be turned to blood.