20 God said to Moses, "Get up early in the morning and confront Pharaoh as he goes down to the water. Tell him, 'God's Message: Release my people so they can worship me. 21 If you don't release my people, I'll release swarms of flies on you, your servants, your people, and your homes. The houses of the Egyptians and even the ground under their feet will be thick with flies. 22 But when it happens, I'll set Goshen where my people live aside as a sanctuary - no flies in Goshen. That will show you that I am God in this land. 23 I'll make a sharp distinction between your people and mine. This sign will occur tomorrow.'" 24 And God did just that. Thick swarms of flies in Pharaoh's palace and the houses of his servants. All over Egypt, the country ruined by flies. 25 Pharaoh called in Moses and Aaron and said, "Go ahead. Sacrifice to your God - but do it here in this country." 26 Moses said, "That would not be wise. What we sacrifice to our God would give great offense to Egyptians. If we openly sacrifice what is so deeply offensive to Egyptians, they'll kill us. 27 Let us go three days' journey into the wilderness and sacrifice to our God, just as he instructed us." 28 Pharaoh said, "All right. I'll release you to go and sacrifice to your God in the wilderness. Only don't go too far. Now pray for me." 29 Moses said, "As soon as I leave here, I will pray to God that tomorrow the flies will leave Pharaoh, his servants, and his people. But don't play games with us and change your mind about releasing us to sacrifice to God." 30 Moses left Pharaoh and prayed to God. 31 God did what Moses asked. He got rid of the flies from Pharaoh and his servants and his people. There wasn't a fly left. 32 But Pharaoh became stubborn once again and wouldn't release the people.
Matthew Henry's Commentary on Exodus 8:20-32
Commentary on Exodus 8:20-32
(Read Exodus 8:20-32)
Pharaoh was early at his false devotions to the river; and shall we be for more sleep and more slumber, when any service to the Lord is to be done? The Egyptians and the Hebrews were to be marked in the plague of flies. The Lord knows them that are his, and will make it appear, perhaps in this world, certainly in the other, that he has set them apart for himself. Pharaoh unwillingly entered into a treaty with Moses and Aaron. He is content they should sacrifice to their God, provided they would do it in the land of Egypt. But it would be an abomination to God, should they offer the Egyptian sacrifices; and it would be an abomination to the Egyptians, should they offer to God the objects of the worship of the Egyptians, namely, their calves or oxen. Those who would offer acceptable sacrifice to God, must separate themselves from the wicked and profane. They must also retire from the world. Israel cannot keep the feast of the Lord, either among the brick-kilns or among the flesh-pots of Egypt. And they must sacrifice as God shall command, not otherwise. Though they were in slavery to Pharaoh, yet they must obey God's commands. Pharaoh consents for them to go into the wilderness, provided they do not go so far but that he might fetch them back again. Thus, some sinners, in a pang of conviction, part with their sins, yet are loth they should go very far away; for when the fright is over, they will turn to them again. Moses promised the removal of this plague. But let not Pharaoh deal deceitfully any more. Be not deceived; God is not mocked: if we think to cheat God by a sham repentance and a false surrender of ourselves to him, we shall put a fatal cheat upon our own souls. Pharaoh returned to his hardness. Reigning lusts break through the strongest bonds, and make men presume and go from their word. Many seem in earnest, but there is some reserve, some beloved, secret sin. They are unwilling to look upon themselves as in danger of everlasting misery. They will refrain from other sins; they do much, give much, and even punish themselves much. They will leave it off sometimes, and, as it were, let their sin depart a little way; but will not make up their minds to part with all and follow Christ, bearing the cross. Rather than that, they venture all. They are sorrowful, but depart from Christ, determined to keep the world at present, and they hope for some future season, when salvation may be had without such costly sacrifices; but, at length, the poor sinner is driven away in his wickedness, and left without hope to lament his folly.