Orthodox Judaism is the approach to religious Judaism which subscribes to a tradition of mass revelation and adheres to the interpretation and application of the laws and ethics of the Torah as legislated in the Talmudic texts by the Tanaim and Amoraim. These texts were subsequently developed and applied by later authorities, known as the Gaonim, Rishonim, and Acharonim. Orthodox Judaism generally includes Modern Orthodox Judaism (אורתודוקסיה מודרנית) and Ultra-Orthodox or Haredi Judaism (יהדות חרדית), but complete within is a wide range of philosophies. Although Orthodox Judaism would probably be considered the mainstream expression of Judaism prior to the 19th century, for some Orthodox Judaism is a modern self-identification that distinguishes it from traditional pre-modern Judaism.
Who is the Bible legislated by?