21. But 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.
22. And I will make the land of Gessen wherein my people is, wonderful in that lay, so that flies shall not be there: and thou shalt know that I am the Lord in the midst of the earth.
23. And I will put a division between my people and thy people: to morrow shall this sign be.
24. And the Lord did so. And there came a very grievous swarm of flies into he houses of Pharao and of his servants, and into all the land of Egypt: and the land was corrupted by this kind of flies.
25. And Pharao called Moses and Aaron, and said to them: Go, and sacrifice to your God in this land.
26. And 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.
27. We will go three days' journey into the wilderness: and we will sacrifice to the Lord our God, as he hath commanded us.
28. And Pharao said: I will let you go to sacrifice to the Lord your God in the wilderness: but go no farther: pray for me.