But the magicians of Egypt did the same by their secret arts. So Pharaoh’s heart remained hardened, and he would not listen to them, as the LORD had said.
22. And the magicians of Egypt did so. A question arises as to how the magicians could imitate Moses, when the material to work upon no longer remained; for, if there were no water left in Egypt, its transmutation was impossible. But I have no doubt but that, for the purpose of their illusion, pure and clear waters appeared for a little while, and then were changed into blood.
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.
Commenting on Exodus 7:14-25
And the magicians of Egypt did so with their enchantments,.... Who were either in company with Pharaoh and his nobles, or were immediately sent for to try their art, and confront Moses and Aaron with it; and who very probably got a little water in a vessel, and by some juggling trick imposing upon, and deceiving the sight of Pharaoh and his servants, made it...