Exodus 8:18-20

Revised Standard Version Catholic Edition

¹⁸ The magicians tried by their secret arts to bring forth gnats, but they could not. So there were gnats on man and beast. 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; as the Lord had said.

The Fourth Plague: Flies

²⁰ Then the Lord said to Moses, “Rise up early in the morning and wait for Pharaoh, as he goes out to the water, and say to him, ‘Thus says the Lord, “Let my people go, that they may serve me.