The Sanhedrin was a legislative and judicial assembly of either 23 or 71 elders, existing at both a local and central level in the ancient Land of Israel.

Rabbinic Judaism, also called Rabbinism, Rabbinicism, or Rabbanite Judaism, has been the mainstream form of Judaism since the 6th century CE, after the codification of the Babylonian Talmud. Rabbinic Judaism has its roots in the Pharisaic school of Second Temple Judaism, and is based on the belief that Moses at Mount Sinai received both the Written Torah and the Oral Torah from God. The Oral Torah, transmitted orally, explains the Written Torah. At first, it was forbidden to write down the Oral Torah, but after the destruction of the Second Temple, it was decided to write it down in the form of the Talmud and other rabbinic texts for the sake of preservation.