Exodus 12:42-49

42It is a night to be much observed to the LORD for bringing them out from the land of Egypt: this is that night of the LORD to be observed by all the children of Israel in their generations.1

43And the LORD said to Moses and Aaron, This is the ordinance of the passover: There shall no stranger eat of it: 44But every man’s servant that is bought for money, when thou hast circumcised him, then shall he eat of it. 45A foreigner and an hired servant shall not eat of it. 46In one house shall it be eaten; thou shalt not carry any of the flesh abroad out of the house; neither shall ye break a bone of it. 47All the congregation of Israel shall keep it.2 48And when a stranger shall sojourn with thee, and will keep the passover to the LORD, let all his males be circumcised, and then let him come near and keep it; and he shall be as one that is born in the land: for no uncircumcised person shall eat of it. 49One law shall be to him that is homeborn, and to the stranger that sojourneth among you.