Origins of Rabbinic Judaism considered the Jews a most "philosophical" people because of their belief in a god that cannot be represented visually), and growing Jewish interest in Greek philosophy, which sought to establish universal truths, thus leading—potentially—to the idea of monotheism, at least in the sense that "all gods are one." It was also at this time that the notion of a clearly bounded Jewish nation identical with the Jewish religion formed. According to one scholar, the clash between the early Christians and Pharisees that ultimately led to the birth of the Christian religion and Rabbinic Judaism reflected the struggle by Jews to
Sephardic law and customs Lurianic-Sephardic rite extended even to countries outside the Ottoman sphere of influence such as Iran, where there were no Spanish exiles. (The previous Iranian rite was based on the Siddur of Saadia Gaon.) The main exceptions to this tendency were: There were also Kabbalistic groups in the Ashkenazic world, which adopted the Lurianic-Sephardic ritual, on the theory of the thirteenth gate mentioned above. This accounts for the "Nusach Sefard" and "Nusach Ari" in use among the Hasidim, which is based on the Lurianic-Sephardic text with some Ashkenazi variations. From the 1840s on a series of prayer-books was published in Livorno,