Exodus 8:24

And Yahweh did so, and brought a grievous gad-fly unto the house of Pharaoh and the houses of his servants and in all the land of Egypt, and the land was laid waste by reason of the gad-fly.

Psalm 78:45

He sent among them, The gad-fly, and it devoured them, And the frog, and it despoiled them;

Psalm 105:31

He spake, and there came in the gad-fly, Gnats, in all their bounds;

But if thou art not letting my people go, behold me! sending forth - against thee, and against thy servants, and against thy people, and against thy houses the gad-fly, - and the houses of the Egyptians shall be full of the gad-fly, moreover also the ground whereon, they are:

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.