8 Then the Lord said to Moses and Aaron, "Take handfuls of soot from a brick kiln, and have Moses toss it into the air while Pharaoh watches. 9 The ashes will spread like fine dust over the whole land of Egypt, causing festering boils to break out on people and animals throughout the land." 10 So they took soot from a brick kiln and went and stood before Pharaoh. As Pharaoh watched, Moses threw the soot into the air, and boils broke out on people and animals alike. 11 Even the magicians were unable to stand before Moses, because the boils had broken out on them and all the Egyptians. 12 But the Lord hardened Pharaoh's heart, and just as the Lord had predicted to Moses, Pharaoh refused to listen.
13 Then the Lord said to Moses, "Get up early in the morning and stand before Pharaoh. Tell him, 'This is what the Lord, the God of the Hebrews, says: Let my people go, so they can worship me. 14 If you don't, I will send more plagues on you and your officials and your people. Then you will know that there is no one like me in all the earth. 15 By now I could have lifted my hand and struck you and your people with a plague to wipe you off the face of the earth. 16 But I have spared you for a purpose-to show you my power and to spread my fame throughout the earth. 17 But you still lord it over my people and refuse to let them go.
Matthew Henry's Commentary on Exodus 9:8-17
Commentary on Exodus 9:8-12
(Read Exodus 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.
Commentary on Exodus 9:13-21
(Read Exodus 9:13-21)
Moses is here ordered to deliver a dreadful message to Pharaoh. Providence ordered it, that Moses should have a man of such a fierce and stubborn spirit as this Pharaoh to deal with; and every thing made it a most signal instance of the power of God has to humble and bring down the proudest of his enemies. When God's justice threatens ruin, his mercy at the same time shows a way of escape from it. God not only distinguished between Egyptians and Israelites, but between some Egyptians and others. If Pharaoh will not yield, and so prevent the judgment itself, yet those that will take warning, may take shelter. Some believed the things which were spoken, and they feared, and housed their servants and cattle, and it was their wisdom. Even among the servants of Pharaoh, some trembled at God's word; and shall not the sons of Israel dread it? But others believed not, and left their cattle in the field. Obstinate unbelief is deaf to the fairest warnings, and the wisest counsels, which leaves the blood of those that perish upon their own heads.