John Gills Exposition of the Bible Commentary - 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?" F5 עודך ... read more
Matthew Henry's Complete Commentary - 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 (Exod. 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... read more