Pietism gained a huge following, mainly amongst the Jewish elite, and it would continue to gain momentum until the end of the Maimonides dynasty in the 15th Century. Additionally forced conversions in Yemen, Crusader and Almohad massacres in North Africa, and the collapse of Islamic Andalusia forced large number of Jews to resettle in Egypt many of whom would join the Pietist movement enthusiastically.  This enthusiasm may have been largely practical as the adoption of Sufi ideas did much to ingratiate the Mamluk Jewish community with their Muslim overlords which may have appealed to many of these refugees, as some historians state that the Maimonides dynasty itself originated from Al Andalus and resettled in Egypt.