8:16. And the Lord said to Moses: Say to Aaron: Stretch forth thy rod, and strike the dust of the earth; and may there be sciniphs in all the land of Egypt.

Sciniphs… Or Cinifs, Hebrew Chinnim, small flying insects, very troublesome both to men and beast.

8:17. And they did so. And Aaron stretched forth his hand, holding the rod; and he struck the dust of the earth, and there came sciniphs on men and on beasts: all the dust of the earth was turned into sciniphs through all the land of Egypt.

8:18: And the magicians with their enchantments practised in like manner, to bring forth sciniphs, and they could not: and there were sciniphs as well on men as on beasts.

8:19. And the magicians said to Pharao: This is the finger of God. And Pharao's heart was hardened, and he hearkened not unto them, as the Lord had commanded.

8:20. 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.

8:21. 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.

8:22. And 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.

8:23. And I will put a division between my people and thy people: to morrow shall this sign be.

8:24. And 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.