Orthodox Judaism holds that both the Written and Oral Torah were divinely revealed to Moses and that the laws within it are binding and unchanging. Orthodox Jews generally consider commentaries on the Shulchan Aruch (a condensed codification of halakha that largely favored Sephardic traditions) to be the definitive codification of Jewish law. Orthodoxy places a high importance on Maimonides' 13 principles as a definition of Jewish faith.

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       Orthodoxy is often divided into Modern Orthodox Judaism and Haredi Judaism. Haredi Judaism is less accommodating to modernity and has less interest in non-Jewish disciplines, and it may be distinguished from Modern Orthodox Judaism in practice by its styles of dress and more stringent practices. Subsets of Haredi Judaism include Hasidic Judaism, which is rooted in the Kabbalah and distinguished by reliance on a Rebbe or religious teacher; and Sephardic Haredi Judaism, which emerged among Sephardic (Asian and North African) Jews in Israel.