Matthew Henry on Exodus 7:14–end
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, and almost every where to be had; but now the Egyptians must either drink blood, or die for thirst. Fish was much of their food (Num 11:5), but the changing of the waters was the death of the fish; it was…
Read the whole note in the consoleJamieson-Fausset-Brown on Exodus 7:22
And the magicians . . . did so with their enchantments, &c.--Little or no pure water could be procured, and therefore their imitation must have been on a small scale --the only drinkable water available being dug among the sands. It must have been on a sample or specimen of water dyed red with some coloring matter. But it was sufficient to serve as a pretext or command for the king to turn unmoved and go to his house.
Next: Exodus Chapter 8
Adam Clarke on Exodus 7:22
And the magicians - did so - But if all the water in Egypt was turned into blood by Moses, where did the magicians get the water which they changed into blood? This question is answered in Exo 7:24. The Egyptians dug round about the river for water to drink, and it seems that the water obtained by this means was not bloody like that in the river: on this water therefore the magicians might operate. Again, though a general commission was given to Moses, not only to turn the waters of the river (Nile) into blood, but also those of their streams, rivers, ponds, and pools; yet it seems pretty clear from Exo 7:20 that he did not proceed thus far, at least in the first instance; for it is there st…
Read the whole note in the consoleJohn Gill