Matthew Poole and continuators on Exodus 7:11

11 Then Pharaoh also called the wisemen , and the sorcerers: now the Magicians of Egypt, they also did in like manner with their inchantments.

Under which general title he seems to comprehend all who were most eminent in any sort of wisdom either natural, or civil, or divine who were all called to give their opinion and advice in these matters.

The same now called sorcerers, who acted by the power of the Devil, whom by certain rites and ceremonies they engaged to their assistance. Of these the two chief were Iannes and Iambres, 2 Tim. 3. 8.

In shew and appearance, which was not difficult for the devil to do either by altering the air and the spectatours sight, and by causing their rods both to look and move like serpents: or by a sudden and secret conveyance of real serpents thither, and removing the rods. Nor is it strange that God permitted those delusions, partly because it was a just punishment upon the Egyptians for their horrid and manifold Idolatry, and barbarous cruelty towards the Israelites, and their other wickedness; and partly because there was a sufficient difference made between their impostures, and the real miracles wrought by Moses and Aaron, as appears from the next verse and from chap. 8. 18. and from other passages. And this is a great evidence of the truth of Scripture-story, and that it was not written by fiction and design. For if Moses had written these books to deceive the world and to advance his own reputation, (as some have impudently said) it is ridiculous to think that he would have put in this and many other passages, which might seem so much to eclipse his honour and the glory of his works.