Exodus 8:24

And the LORD did so. There came great swarms of flies into the house of Pharaoh and into his servants' houses. Throughout all the land of Egypt the land was ruined by the swarms of flies.

Psalm 78:45

He sent among them swarms of flies, which devoured them, and frogs, which destroyed them.

Psalm 105:31

He spoke, and there came swarms of flies, and gnats throughout their country.

Or else, if you will not let my people go, behold, I will send swarms of flies on you and your servants and your people, and into your houses. And the houses of the Egyptians shall be filled with swarms of flies, and also the ground on which they stand.

Treasury of Scripture Knowledge

Summary

Exodus 8:24

And the LORD did so; and there came a grievous swarm of flies into the house of Pharaoh, and into his servants' houses, and into all the land of Egypt: the land was corrupted by reason of the swarm of flies.