The Lord also said to Moses: Arise early, and stand before Pharao; for he will go forth to the waters: and thou shalt say to him: Thus saith the Lord: Let my people go to sacrifice to me. 21But if thou wilt not let them go, behold I will send in upon thee, and upon thy servants, and upon thy houses, all kind of flies: and the houses of the Egyptians shall be filled with flies of divers kinds, and the whole land wherein they shall be. 22And I will make the land of Gessen wonderful in that day, so that flies shall not be there: and thou shalt know that I am the Lord in the midst of the earth. 23And I will put a division between my people and thy people: to morrow shall this sign be. 24And the Lord did so. And there came a very grievous swarm of flies into the houses of Pharao and of his servants, and into all the land of Egypt: and the land was corrupted by this kind of flies. 25And Pharao called Moses and Aaron, and said to them: Go and sacrifice to your God in this land. 26And Moses said: It cannot be so: for we shall sacrifice the abominations of the Egyptians to the Lord our God: now if we kill those things which the Egyptians worship, in their presence, they will stone us. 27We will go three days' journey into the wilderness; and we will sacrifice to the Lord our God, as he hath commanded us. 28And Pharao said: I will let you go to sacrifice to the Lord your God in the wilderness, but go no farther: pray for me. 29And Moses said: I will go out from thee, and will pray to the Lord: and the flies shall depart from Pharao, and from his servants, and from his people to morrow: but do not deceive any more, in not letting the people go to sacrifice to the Lord. 30So Moses went out from Pharao, and prayed to the Lord. 31And he did according to his word: and he took away the flies from Pharao, and from his servants, and from his people: there was not left so much as one. 32And Pharao's heart was hardened, so that neither this time would he let the people go.