Exodus 8:19-21

New Catholic Bible

¹⁹ Thus I will establish a difference between my people and your people. This sign will happen tomorrow.” ’ ”

²⁰ This is what the Lord did. A huge swarm of flies flew into the house of Pharaoh, the houses of his ministers, and all over the land of Egypt. The area was devastated because of the flies.

²¹ Pharaoh summoned Moses and Aaron and said, “Go and sacrifice to your God in the land.”