Exodus 8:17-19

He did it. Aaron grabbed his staff and struck the dust of the Earth; it turned into gnats, gnats all over people and animals. All the dust of the Earth turned into gnats, gnats everywhere in Egypt. The magicians tried to produce gnats with their spells but this time they couldn’t do it. There were gnats everywhere, all over people and animals. The magicians said to Pharaoh, “This is God’s doing.” But Pharaoh was stubborn and wouldn’t listen. Just as GOD had said.