John Gills Exposition of the Bible Commentary - Exodus 7:17
Thus saith the Lord, in this thou shalt know that I am the Lord ,.... By the following instance of his power and vengeance: behold, I will smite with the rod that is in my hand ; which though in the hand of Moses, Exodus 7:18 yet he being his ambassador, and representing him, is said to be in the hand of the Lord; and with this he threatens to smite upon the waters which are in the river ; the river Nile, and the canals thereof: and they shall be turned to blood ; and if this... read more
Matthew Henry's Complete Commentary - Exodus 7:14-25
Here is the first of the ten plagues, the turning of the water into blood, which was, 1. A dreadful plague, and very grievous. The very sight of such vast rolling streams of blood, pure blood no doubt, florid and high-colored, could not but strike a horror upon people: much more afflictive were the consequences of it. Nothing more common than water: so wisely has Providence ordered it, and so kindly, that that which is so needful and serviceable to the comfort of human life should be cheap,... read more