Exodus 12:48

And if any sojourner will be willing to cross over into your settlement, and to keep the Passover of the Lord, all his males shall first be circumcised, and then he shall celebrate the rite. And he shall be just like a native of the land. But if any man is not circumcised, he shall not eat from it

Other versions

King James Version

And 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 thereof.

English Standard Version

If a stranger shall sojourn with you and would keep the Passover to the LORD, let all his males be circumcised. Then he may come near and keep it; he shall be as a native of the land. But no uncircumcised person shall eat of it.

New International Version

"An alien living among you who wants to celebrate the LORD's Passover must have all the males in his household circumcised; then he may take part like one born in the land. No uncircumcised male may eat of it.