Exodus 8:20-32 World English Bible (WEB)
20 Yahweh said to Moses, “Rise up early in the morning, and stand before Pharaoh; behold, he comes out to the water; and tell him, ‘This is what Yahweh says, “Let my people go, that they may serve me. 21 Else, if you will not let my people go, behold, I will send swarms of flies on you, and on your servants, and on your people, and into your houses: and the houses of the Egyptians shall be full of swarms of flies, and also the ground whereon they are. 22 I will set apart in that day the land of Goshen, in which my people dwell, that no swarms of flies shall be there; to the end you may know that I am Yahweh on the earth. 23 I will put a division between my people and your people: by tomorrow shall this sign be.”’” 24 Yahweh did so; and there came grievous swarms of flies into the house of Pharaoh, and into his servants’ houses: and in all the land of Egypt the land was corrupted by reason of the swarms of flies.
25 Pharaoh called for Moses and for Aaron, and said, “Go, sacrifice to your God in the land!”
26 Moses said, “It isn’t appropriate to do so; for we shall sacrifice the abomination of the Egyptians to Yahweh our God. Behold, shall we sacrifice the abomination of the Egyptians before their eyes, and won’t they stone us? 27 We will go three days’ journey into the wilderness, and sacrifice to Yahweh our God, as he shall command us.”
28 Pharaoh said, “I will let you go, that you may sacrifice to Yahweh your God in the wilderness, only you shall not go very far away. Pray for me.”
29 Moses said, “Behold, I go out from you, and I will pray to Yahweh that the swarms of flies may depart from Pharaoh, from his servants, and from his people, tomorrow; only don’t let Pharaoh deal deceitfully any more in not letting the people go to sacrifice to Yahweh.” 30 Moses went out from Pharaoh, and prayed to Yahweh. 31 Yahweh did according to the word of Moses, and he removed the swarms of flies from Pharaoh, from his servants, and from his people. There remained not one. 32 Pharaoh hardened his heart this time also, and he didn’t let the people go.
Exodus 8:20-32 New International Version (NIV)
The Plague of Flies
20 Then the Lord said to Moses, “Get up early in the morning and confront Pharaoh as he goes to the river and say to him, ‘This is what the Lord says: Let my people go, so that they may worship me. 21 If you do not let my people go, I will send swarms of flies on you and your officials, on your people and into your houses. The houses of the Egyptians will be full of flies; even the ground will be covered with them.
22 “‘But on that day I will deal differently with the land of Goshen, where my people live; no swarms of flies will be there, so that you will know that I, the Lord, am in this land. 23 I will make a distinction[a] between my people and your people. This sign will occur tomorrow.’”
24 And the Lord did this. Dense swarms of flies poured into Pharaoh’s palace and into the houses of his officials; throughout Egypt the land was ruined by the flies.
25 Then Pharaoh summoned Moses and Aaron and said, “Go, sacrifice to your God here in the land.”
26 But Moses said, “That would not be right. The sacrifices we offer the Lord our God would be detestable to the Egyptians. And if we offer sacrifices that are detestable in their eyes, will they not stone us? 27 We must take a three-day journey into the wilderness to offer sacrifices to the Lord our God, as he commands us.”
28 Pharaoh said, “I will let you go to offer sacrifices to the Lord your God in the wilderness, but you must not go very far. Now pray for me.”
29 Moses answered, “As soon as I leave you, I will pray to the Lord, and tomorrow the flies will leave Pharaoh and his officials and his people. Only let Pharaoh be sure that he does not act deceitfully again by not letting the people go to offer sacrifices to the Lord.”
30 Then Moses left Pharaoh and prayed to the Lord, 31 and the Lord did what Moses asked. The flies left Pharaoh and his officials and his people; not a fly remained. 32 But this time also Pharaoh hardened his heart and would not let the people go.