Exodus 12:48-50

American Standard Version

⁴⁸ And when a stranger shall sojourn with thee, and will keep the passover to Jehovah, 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: but no uncircumcised person shall eat thereof. ⁴⁹ One law shall be to him that is home-born, and unto the stranger that sojourneth among you. ⁵⁰ Thus did all the children of Israel; as Jehovah commanded Moses and Aaron, so did they.