This verse seems to imply that the magicians now formally gave way and confessed their defeat.

The boil was upon the magicians - They could not produce a similar malady by throwing ashes in the air; and they could neither remove the plague from the people, nor from their own tormented flesh. Whether they perished in this plague we know not, but they are no more mentioned. If they were not destroyed by this awful judgment, they at least left the field, and no longer contended with these messengers of God. The triumph of God's power was now complete, and both the Hebrews and the Egyptians must see that there was neither might, nor wisdom, nor counsel against the Lord; and that, as universal nature acknowledged his power, devils and men must fail before him.

And the magicians could not stand before Moses, because of the boils,.... Which were on them as on others, and which with all their art and skill they could not keep off; and which were so sore upon them, and painful to them, that they were obliged to withdraw, and could not stand their ground, confronting Moses, contesting and litigating with him; for it seems, though they had not acted, nor attempted to act in imitation of Moses and Aaron, since the plague of the lice, yet they still continued about Pharaoh, lessening as much as in them lay the miracles wrought by them, and suggesting that they had done the most and the worst they could, and so contributing to harden the heart of Pharaoh against the people of Israel; wherefore they were righteously punished with boils for so doing, and for their contempt of the messengers and miracles of God, and for their imposition upon men, and their deception of them:

for the boil was upon the magicians, and upon all the Egyptians; but not upon Moses and Aaron, nor upon any of the Israelites, and was afterwards called peculiarly the botch of Egypt, Deuteronomy 28:27.

And the magicians could not stand before Moses because of the boils; for the boil was upon the magicians, and upon all the Egyptians.

9:11 The magicians were forced to retreat, and could not stand before Moses - To which the apostle refers, 2Tim 3:9, when he saith, that their folly was manifested unto all men.

9:8-12 When the Egyptians were not wrought upon by the death of their cattle, God sent a plague that seized their own bodies. If lesser judgments do not work, God will send greater. Sometimes God shows men their sin in their punishment. They had oppressed Israel in the furnaces, and now the ashes of the furnace are made a terror to them. The plague itself was very grievous. The magicians themselves were struck with these boils. Their power was restrained before; but they continued to withstand Moses, and to confirm Pharaoh in his unbelief, till they were forced to give way. Pharaoh continued obstinate. He had hardened his own heart, and now God justly gave him up to his own heart's lusts, permitting Satan to blind and harden him. If men shut their eyes against the light, it is just with God to close their eyes. This is the sorest judgment a man can be under out of hell.