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
Sephardic law and customs and seek to establish this as the standard "Israeli Sephardi" rite for use by all communities. The liturgy of the Spanish and Portuguese Jews differs from all these (more than the Eastern groups differ from each other), as it represents an older form of the text, has far fewer Kabbalistic additions and reflects some Italian influence. The differences between all these groups, however, exist at the level of detailed wording, for example the insertion or omission of a few extra passages: structurally, all Sephardic rites are very similar. "See List of Sephardic prayer books. Sephardic law and customs Sephardic law