Exodus 8:18-20

New Revised Standard Version Catholic Edition

¹⁸ The magicians tried to produce gnats by their secret arts, but they could not. There were gnats on both humans and animals. ¹⁹ And the magicians said to Pharaoh, “This is the finger of God!” But Pharaoh’s heart was hardened, and he would not listen to them, just as the Lord had said.

The Fourth Plague: Flies

²⁰ Then the Lord said to Moses, “Rise early in the morning and present yourself before Pharaoh, as he goes out to the water, and say to him, ‘Thus says the Lord: Let my people go, so that they may worship me.