Exodus 8:3, 21

The Nile River will be filled with frogs. They will come up into your palace, into your bedroom, on your bed, into the houses of your officers, and onto your people. They will come into your ovens and into your baking pans.

If you don’t let them go, I will send swarms of flies into your houses. The flies will be on you, your officers, and your people. The houses of Egypt will be full of flies, and they will be all over the ground, too.