Exodus 12:43-13:2

43The Lord said to Moses and Aaron: This is the ordinance for the passover: no foreigner shall eat of it, 44but any slave who has been purchased may eat of it after he has been circumcised; 45no bound or hired servant may eat of it. 46It shall be eaten in one house; you shall not take any of the animal outside the house, and you shall not break any of its bones. 47The whole congregation of Israel shall celebrate it. 48If an alien who resides with you wants to celebrate the passover to the Lord, all his males shall be circumcised; then he may draw near to celebrate it; he shall be regarded as a native of the land. But no uncircumcised person shall eat of it; 49there shall be one law for the native and for the alien who resides among you. 50All the Israelites did just as the Lord had commanded Moses and Aaron. 51That very day the Lord brought the Israelites out of the land of Egypt, company by company.

13The Lord said to Moses: 2Consecrate to me all the firstborn; whatever is the first to open the womb among the Israelites, of human beings and animals, is mine.

From the oremus Bible Browser https://bible.oremus.org v2.5.2 2 April 2021.