Exodus 8:23-25

New King James Version

²³ I will ^[a]make a difference between My people and your people. Tomorrow this ^(A)sign shall be.” ’ ” ²⁴ And the Lord did so. ^(B)Thick swarms of flies came into the house of Pharaoh, into his servants’ houses, and into all the land of Egypt. The land was corrupted because of the swarms of flies.

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