Exodus 8:21
Else, if you will not let my people go, behold, I will send swarms of flies upon you, and upon your servants, and upon your people, and into your houses: and the houses of the Egyptians shall be full of swarms of flies, and also the ground on which they are.
Psalm 78:45
He sent swarms of flies among them, which devoured them; and frogs, which destroyed them.
Psalm 105:31
He spoke, and there came swarms of flies, and gnats in all their country.
Isaiah 7:18
And it shall come to pass in that day, that the LORD shall whistle for the fly that is in the uttermost part of the rivers of Egypt, and for the bee that is in the land of Assyria.