Sephardic law and customs Spain or Portugal (as well as one Romaniot and one Ashkenazi synagogue). In a process lasting from the 16th through the 19th century, the native Jewish communities of most Arab and Ottoman countries adapted their pre-existing liturgies, many of which already had a family resemblance with the Sephardic, to follow the Spanish rite in as many respects as possible. Some reasons for this are: The most important theological, as opposed to practical, motive for harmonization was the Kabbalistic teachings of Isaac Luria and Ḥayim Vital. Luria himself always maintained that it was the duty of every Jew to abide by
Origins of Rabbinic Judaism Sherira Gaon and often repeated. The oral law was subsequently codified in the Mishnah and Gemarah, and is interpreted in Rabbinic literature detailing subsequent rabbinic decisions and writings. Rabbinic Jewish literature is predicated on the belief that the Written Law cannot be properly understood without recourse to the Oral Law (the Mishnah). Much Rabbinic Jewish literature concerns specifying what behavior is sanctioned by the law; this body of interpretations is called "halakha" ("the way"). Originally, Jewish scholarship was oral. Rabbis expounded and debated the law (the written law expressed in the Hebrew Bible) and discussed the Tanakh without the benefit