Exodus 8:23-25

Revised Standard Version

²³ Thus I will put a division^[a] between my people and your people. By tomorrow shall this sign be.”’” ²⁴ And the Lord did so; there came great swarms of flies into the house of Pharaoh and into his servants’ houses, and in all the land of Egypt the land was ruined by reason of the flies.

²⁵ Then Pharaoh called Moses and Aaron, and said, “Go, sacrifice to your God within the land.”