Halakhah sa Mga Bilang 15:15: Mishneh Torah, Kings and Wars, Mishneh Torah, Foundations & Mishneh Torah, Forbidden Intercourse

Moses our Teacher did not bequeath the Torah and the Commandments to anyone but to Israel, as it says, “the Heritage of the Congregation of Jacob” (Deut. 33:4), and to anyone from the other nations who wishes to convert, as it says, “as you, as a convert” (Numbers 15:15). However, no one who does not want to convert is forced to accept the Torah and the Commandments. Moses our Teacher was commanded by the Almighty to compel the world to accept the Commandments of the Sons of Noah. Anyone who fails to accept them is executed. Anyone who does accept them upon himself is called a Convert Who May Reside Anywhere⁷⁹A “Resident Convert” for short. He may live anywhere in the Land of Israel.. He must accept them in front of three wise and learned Jews. However, anyone who agrees to be circumcised and twelve months have elapsed and he was not as yet circumcised is no different than any other member of the nations of the world⁸⁰He remains a non-Jew in every respect..

It is a clear and manifest principle concerning the Torah that as a Law it is permanently established forever and evermore; and that it is not subject to mutibility, nor to diminution, nor to amendment; for it is said: "All this word which I command you, that shall ye observe to do; thou shalt not add thereto, nor diminish from it" (Ibid. 13.1); and it is further said: "But the things that are revealed belong unto us and to our children forever, that we may do all the words of this law" (Ibid. 29.28). Herefrom we learn that according to all the words of the Torah we are commanded to do forever. It is, moreover, said: "a statute forever throughout your generations" (Num. 15.15); and again it is said:¹See Baba Mezi’a 59. C. "It is not in heaven" (Deut. 30.12); herefrom we learn that no prophet is thereafter permitted to make any innovation. Therefore, should a man rise up, whether he be from among the Gentiles or whether from among Israel, and deliver a token and perform a miracle saying, that God hath sent him to add a commandment, or to diminish a commandment, or to interpret a certain commandment of among the commandments with such interpretation as we have not heard by tradition from Moses; or he said, that these commandments with which Israel was charged are not forever and throughout all generations, but that they were commandments in keeping with those times only, behold him, he is a false prophet, seeing that he came to deny the prophecy of Moses; and his punishment is death by strangulation, because he wilfully spoke in the name of God concerning that which He did not charge him; for He, blessed is He! commanded Moses, saying, that this enactment was "unto us and unto our children forever" (Deut. 29.28); and, "God is not a man that He should lie" (Num. 23.19).

Throughout the generations, any non-Jew who wants to enter the covenant and come in under the 'wings of the Presence of God' accepts upon him or herself the yoke of Torah - he needs circumcision, immersion and a Temple offering. If female, she needs only immersion and an offering, as is said "As for you, so for the foreigner." That's to say, just as you (entered via) circumcision, immersion and an offering, so too the foreigner (shall enter via) circumcision, immersion and an offering.