John Gills Exposition of the Bible Commentary - Exodus 7:18
And the fish that is in the river shall die ,.... Their element being changed, and they not able to live in any other but water: and the river shall stink ; with the blood, into which it should be congealed, and with the putrefied bodies of fishes floating in it: and the Egyptians shall loath to drink of the water of the river ; the very colour of it, looking like blood, would set them against it, and create a nausea in them; or "shall be weary" F8 נלאו "delassabuntur",... 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