Exodus 12:43-51 - Institution Of The Passover
43 And Yahweh said unto Moses and Aaron: This, is the statute of the passover, - No stranger, shall eat thereof; 44 but, every man's servant bought with silver, - when thou hast circumcised him, then, shall he eat thereof: 45 An alien or a hireling, shall not eat thereof. 46 In one house, shall it be eaten, thou shalt not take forth out of the house any of the flesh outside; and a, bone thereof, shalt thou not break. 47 All the assembly of Israel, shall keep it. 48 And when there may sojourn with thee a sojourner who may wish to keep a passover to Yahweh, there must be circumcised to him every male and then, may he draw near to keep it, so shall he be as a native of the land, - but no uncircumcised male, shall eat thereof. 49 One law, shall there be for the native, and for the sojourner that sojourneth in your midst.
50 Thus did all the sons of Israel, - as Yahweh had commanded Moses and Aaron, so, did they. 51 And it came to pass, on this self-same day, that Yahweh brought forth the sons of Israel out of the land of Egypt, by their hosts.