Exodus 12:48-51 Amplified Bible (AMP)

48. When a stranger sojourning with you wishes to 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. But no uncircumcised person shall eat of it.

49. There shall be one law for the native-born and for the stranger or foreigner who sojourns among you.

50. Thus did all the Israelites; as the Lord commanded Moses and Aaron, so did they.

51. And on that very day the Lord brought the Israelites out of the land of Egypt by their hosts.

Exodus 12