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.
Ver. 17. In this thou shalt know,] q.d., I shall really answer thee to that stomachful question of thine. Exo 5:2 See Trapp on " Exo 5:2 "