Matthew Henry on Exodus 9:13-21
Here is, I. A general declaration of the wrath of God against Pharaoh for his obstinacy. Though God has hardened his heart (Exo 9:12), yet Moses must repeat his applications to him; God suspends his grace and yet demands obedience, to punish him for requiring bricks of the children of Israel when he denied them straw. God would likewise show forth a pattern of long-suffering, and how he waits to be gracious to a rebellious and gainsaying people Six times the demand had been made in vain, yet Moses must make it the seventh time: Let my people go, Exo 9:13. A most dreadful message Moses is here ordered to deliver to him, whether he will hear or whether he will forbear. 1. He must tell him that…
Read the whole note in the consoleJamieson-Fausset-Brown on Exodus 9:10
Moses took ashes from the furnace--Hebrew, "brick-kiln." The magicians, being sufferers in their own persons, could do nothing, though they had been called; and as the brick-kiln was one of the principal instruments of oppression to the Israelites [Deu 4:20; Kg1 8:51; Jer 11:4], it was now converted into a means of chastisement to the Egyptians, who were made to read their sin in their punishment.
Adam Clarke on Exodus 9:17
As yet exaltest thou thyself against my people - So it appears that at this time he might have submitted, and thus prevented his own destruction.
John Gill on Exodus 9:17
As yet exaltest thou thyself against my people, that thou wilt not let them go? And so against God himself, disobeying his commands, despising his messengers, and slighting his miracles, and hardening his heart against him, and refusing to let Israel go, after all; thereby showing the most intolerable pride and insolence not only against the Lord's poor people, but against himself, for what is done to them he takes as done to himself; or "dost thou still tread upon my people?" (e) trample them under foot, and make an highway or causeway of them.
(e) "adhuc tu calcas populum meum?" some in Drusius; so Jarchi.