According to Cabalistic traditions, certain Jews of peculiar sanctity or knowledge were able with impunity to make use of the Divine Name. A Ba'al Shem was therefore one who had acquired this power and employed it in writing amulets, invoking spirits, and prescribing cures for various diseases. Poland and particularly Podolia--which had not yet been ceded to Russia--became thus a centre of Cabalism where a series of extraordinary movements of a mystical kind followed each other. In 1666, when the Messianic era was still believed to be approaching, the whole Jewish world was convulsed by the sudden appearance of Shabbethai Zebi, the son of a poulterer in Smyrna named Mordecai, who proclaimed himself the promised Messiah and rallied to his support a huge following not only amongst the Jews of Palestine, Egypt, and Eastern Europe, but even the hard-headed Jews of the Continental bourses.[466] Samuel Pepys in his Diary refers to the bets made amongst the Jews in London on the chances of "a certain person now in Smyrna" being acclaimed King of the World and the true Messiah.[467] Shabbethai, who was an expert Cabalist and had the temerity to utter the Ineffable Name Jehovah, was said to be possessed of marvellous powers, his skin exuded exquisite perfume, he indulged perpetually in sea-bathing and lived in a state of chronic ecstasy. The pretensions of Shabbethai, who took the title of "King of the Kings of the Earth," split Jewry in two; many Rabbis launched imprecations against him, and those who had believed in him were bitterly disillusioned when, challenged by the Sultan to prove his claim to be the Messiah by allowing poisoned arrows to be shot at him, he suddenly renounced the Jewish faith and proclaimed himself a Mohammedan. His conversion, however, appeared to be only partial, for "at times he would assume the rôle of a pious Mohammedan and revile Judaism; at others he would enter into relations with Jews as one of their own faith."[468] By this means he retained the allegiance both of Moslems and of Jews. But the Rabbis, alarmed for the cause of Judaism, succeeded in obtaining his incarceration by the Sultan in a castle near Belgrade, where he died of colic in 1676.[469] This prosaic ending to the career of the Messiah did not, however, altogether extinguish the enthusiasm of his followers, and the Shabbethan movement continued into the next century. In Poland Cabalism broke out with renewed energy; fresh Zaddikim and Ba'al Shems arose, the most noted of these being Israel of Podolia, known as Ba'al Shem Tob, or by the initial letters of this name, Besht, who founded his sect of Hasidim in 1740.