Exodus 8:23-25

Young's Literal Translation

²³ and I have put a division between My people and thy people: to-morrow is this sign.'

²⁴ And Jehovah doth so, and the grievous beetle entereth the house of Pharaoh, and the house of his servants, and in all the land of Egypt the land is corrupted from the presence of the beetle.

²⁵ And Pharaoh calleth unto Moses and to Aaron, and saith, `Go, sacrifice to your God in the land;'