Exodus 12:42-44

Revised Standard Version

⁴² It was a night of watching by the Lord, to bring them out of the land of Egypt; so this same night is a night of watching kept to the Lord by all the people of Israel throughout their generations.

Directions for the Passover

⁴³ And the Lord said to Moses and Aaron, “This is the ordinance of the passover: no foreigner shall eat of it; ⁴⁴ but every slave that is bought for money may eat of it after you have circumcised him.