Exodus 8:24
The LORD 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.
Psalm 78:45
He sent among them swarms of flies, which devoured them; and frogs, which destroyed them.
Psalm 105:31
He spoke, and swarms of flies came, and lice in all their borders.
Exodus 8:21
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.