John Gills Exposition of the Bible Commentary - Exodus 7:25
And seven days were fulfilled ,.... Or there were full seven days, a whole week: after that the Lord had smitten the river , and turned it into blood; here the miracle is ascribed to him; Moses and Aaron, and the rod they used, were only instruments, nothing short of almighty power could do such a miracle; it seems this lasted seven days at least. It began, as Bishop Usher F15 Annal. Vet. Test. p. 20. computes it, on the eighteen day of the sixth month, or Adar, part of February... 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