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Halachic Basis of Operation of the Beis Din
for Matters Concerning Bnei Noah

This statement is part of a series of twenty requests for piskei din (legal rulings) that have been submitted to the Beis Din by those who follow its rulings.  While full piskei din (legal rulings) are in preparation, a brief summary is presented. The summary below is not meant to be used as a source for deriving any practical consequences. It will be replaced at a later date with a formal ruling.

On the 6th of Tevet, the Beis Din for Bnei Noah was asked:

Q. What is the halachic basis of operation of the Beis Din of Bnei Noah?
How will the Beis Din function?  How will it come to determination among diverse sets of rulings given by diverse sets of legal systems. (Rambam, Beis Yosef, Sefardic, Ashkenazic, etc) 

Answer. [The court will function as a traditional Rabbinical Court.] This is not the first case of a Beis Din having to respond differently to different people. A great many of the current decisors do this regularly.

Of course in so doing one has to take into consideration the culture, traditions and the nature of the person or community to whose need the Beis Din has to respond.



The following is a standard description of the function of a Beis Din.  This material is not part of the Beis Din reply above, but is presented to add context the response:

The process of deciding halakha

The boundaries of Jewish law are determined through the halakhic process, a religious-ethical system of legal reasoning. A rabbinical court generally bases its opinions on reviewing and determining the concensus of 1) the primary sources of halakha, 2) precedent set by previous rabbinic opinions. 3) expert testimony and witnesses.  Each of the above sources is weighted according to authority and scope of the material as traditionally determined in the
halakhic process.

The major sources and genre of halakha consulted include:
  • The foundational Talmudic literature (especially the Mishna and the Babylonian Talmud) with commentaries;
  • The post-Talmudic codificatory literature, such as Maimonides' Mishneh Torah and the Shulchan Aruch with commentaries;
  • Regulations and other "legislative" enactments promulgated by rabbis and communal bodies:
    • Gezeirah: "preventative legislation" of the Rabbis, intended to prevent violations of the commandments
    • Takkanah: "positive legislation", practices instituted by the Rabbis not based (directly) on the commandments
  • Minhag: Customs, community practices, and customary law, as well as the exemplary deeds of prominent (or local) rabbis;
  • The she'eloth u-teshuvoth (responsa, literally "questions and answers") literature.
  • Dina d'malchuta dina ("the law of the land is law"): an additional source of halakha, being the principle recognizing non-Jewish laws and non-Jewish legal jurisdiction as binding on Jewish citizens, provided that they are not contrary to any laws of Judaism. This principle applies especially iny areas of commercial, civil and criminal law.

In addition a Chaver Beth/Beis Din (חבר בית דין Friend of the Court, Amicus curiae) or other professional may be brought as an internal adviser to the court. They may bring specialised expertise to the beth din. Often a chaver will be a dayan with training in secular law or science, who can share his experience and perspectives with the court. For example some battei din that deal with issues of shechiṭṭah, may have a chaver who is knowledgeable about veterinary medicine or meat science to assist the court, as an expert witness.

Jurisdiction and Binding Authority of the Rabbinical Court

In antiquity, the Sanhedrin functioned essentially as the Supreme Court and legislature for Judaism, and had the power to administer binding law, including both received law and its own Rabbinic decrees, on all Jews - rulings of the Sanhedrin became halakha. That court ceased to function in its full mode in 40 C.E., and is currently only in the very initial stages of reformation. Today, the authoritative application of Jewish law is left to the community rabbi, and the community rabbinical courts, with applicability only within that community.

A ruling becomes authoritative outside a single community by a process where
halakhic arguments are effectively, yet unofficially, peer-reviewed. When a rabbinic posek ("decisor") proposes a new interpretation of a law, that interpretation may be considered binding for the posek's questioner or immediate community. Depending on the stature of the posek and the quality of the decision, an interpretation may also be gradually accepted by rabbis and members of similar Jewish communities.

Under this system, there is a tension between the relevance of earlier and later authorities in constraining halakhic interpretation and innovation. On the one hand, there is a principle in halakha not to overrule a specific law from an earlier era, unless based on an earlier authority. On the other hand, another principle recognizes the responsibility and authority of later authorities, and especially the posek handling a concurrent question. In addition, the halakha embodies a wide range of principles that permit judicial discretion and deviation. Generally speaking, a rabbi in any one period will not overrule specific laws from an earlier era, unless supported by a relevant earlier precedent. There are important exceptions to this principle, which empower the posek (decisor) or beth din (court) responsible for a given opinion.

However today, there have developed parallel legal systems which differ in minor points.  The Beis Din will take into account the
culture, traditions and the nature of the person to whose need the Beis Din has to respond, and if required will respond according to the legal system of which that person belongs.

Flexibility within the Halakha

Notwithstanding the potential for innovation, rabbis and Jewish communities differ greatly on how they make changes in Halakha. Notably, poskim frequently extend the application of a law to new situations, but do not consider such applications as constituting a "change" in Halakha. For example, many rulings concerning electricity are derived from rulings concerning fire, due to its physical similarity with that other form of human-managed energy.

Throughout history, halakha has, within limits, been a flexible system, despite its internal rigidity, addressing issues on the basis of circumstance and precedent. The classical approach has permitted new rulings incorporating regarding modern technology. These rulings guide the observant about the proper use of electricity on the Sabbath and holidays within the parameters of halakhah. (Many scholarly tomes have been published and are constantly being reviewed ensuring the maximum coordination between electrical appliances and technology with the needs of the religiously observant Jew, with a great range of opinions.) Often, as to the applicability of the law in any given situation, the proviso is: "consult your local rabbi or posek."

Attempting to Approximate Divine Law

Jews hold that, unlike secular precedent-based systems, halakha is also a religious system, whose core represents the revealed will of G-d, either directly, or as close to directly as possible. Although Judaism acknowledges that rabbis made many additions to and interpretations of Jewish Law, at its core is a body of law representing the literal word of G-d revealed to Moses on Mount Sinai through both a written Torah and an Oral Law. Judaism believes that subsequent interpretations have been derived using principles and a process which was divinely revealed, and implemented by previous generations with the utmost accuracy and care. As such, one must be extremely conservative changing or adapting Jewish law. There have, nevertheless, been many changes including both rabbinic ordinances over centuries, and the recent application of halakha to modern technology.

Click here for the original Hebrew decision



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