Exodus 12:48

48 And if any proselyte shall come to you to keep the passover to the Lord, thou shalt circumcise every male of him, and then shall he approach to sacrifice it, and he shall be even as the original inhabitant of the land; no uncircumcised person shall eat of it.

Exodus 12:48 Meaning and Commentary

Exodus 12:48

And when a stranger shall sojourn with thee,
&e.] Who by so doing became a proselyte of the gate, he observing the commands of the sons of Noah: and will keep the passover of the Lord;
is desirous of being admitted to that ordinance: let all his males be circumcised, and then let him come near, and keep
it:
first himself, and then all his male children and male servants, and then, and not till then, he might approach to this ordinance, and observe it; for by this means he would become a proselyte of righteousness, and in all respects as an Israelite, or son of Abraham, as it follows: and he shall be as one that is born in the land;
a native and proper inhabitant of Canaan, enjoying all the privileges and immunities of such: for no uncircumcised person shall eat thereof;
these laws and rules concerning those persons that were to eat of the passover are such as were to be observed in all successive generations, to the coming of Christ; and were the rather necessary to be given now, because of the mixed multitude who now came up with the children of Israel out of Egypt.

Exodus 12:48 In-Context

46 In one house shall it be eaten, and ye shall not carry of the flesh out from the house; and a bone of it ye shall not break.
47 All the congregation of the children of Israel shall keep it.
48 And if any proselyte shall come to you to keep the passover to the Lord, thou shalt circumcise every male of him, and then shall he approach to sacrifice it, and he shall be even as the original inhabitant of the land; no uncircumcised person shall eat of it.
49 There shall be one law to the native, and to the proselyte coming among you.
50 And the children of Israel did as the Lord commanded Moses and Aaron for them, so they did.

The Brenton translation of the Septuagint is in the public domain.