Exodus 8:21
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.
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.
Isaiah 7:18
In that day the LORD will whistle for the fly that is at the end of the streams of Egypt, and for the bee that is in the land of Assyria.