According to this,
Sources of Halakhah
Halakhah comes from three sources: from the Torah, from laws instituted by the rabbis and from long-standing customs. Halakhah from any of these sources can be referred to as a mitzvah (commandment; plural: mitzvot). The word "mitzvah" is also commonly used in a casual way to refer to any good deed. Because of this imprecise usage, sophisticated halakhic discussions are careful to identify mitzvot as being mitzvot d'oraita (an Aramaic word meaning "from the Torah") or mitzvot d'rabbanan (Aramaic for "from the rabbis"). A mitzvah that arises from custom is referred to as a minhag. Mitzvot from all three of these sources are binding, though there are differences in the way they are applied (see below). Mitzvot D'Oraita (in Hebrew)Mitzvot D'Oraita:
Commandments from the Torah
At the heart of halakhah is the unchangeable 613 mitzvot (commandments) that G-d gave to the Jewish people in the Torah (the first five books of the Bible).
halakha is also the Torah...And, Halakha whether from Rabbinical traditidon or not still has the weight of the Torah...Therefore, the discussions in Acts 15 ARE of the Torah laws from here...
Thank you for making my point. I would submit that Halakha from tradition does *NOT* have the weight of Torah, even though others may say it does - Even as the Roman Tradition does not bear the weight that scripture does. There is ONLY Torah. and ONLY the written Torah. Period.
Acts 15 is the case in point, and you will look to your heart's content within Torah itself, but you will not find proselytes commanded to be circumcised. It ain't there. There IS a passage which says a proselyte cannot attend Passover without being circumcised, but that infers in itself that there can be proselytes who are uncircumcised. And *NOWHERE* does the Torah claim salvation in the physical circumcision. However, the Talmud DOES insist proselytes must be circumcised, and at least will infer salvation thereby (I cannot point to that, but had you ever read Jewish Tradition, you would be aware of where my confidence comes from).