The success of astrology was connected with that of the Oriental religions, which lent it their support, as it in turn helped them. We have seen how it forced itself upon Semitic paganism, how it transformed Persian Mazdaism and even subdued the arrogance of the Egyptian sacerdotal caste.[3] Certain mystical treatises ascribed to the old Pharaoh Nechepso and his confidant, the priest Petosiris, nebulous and abstruse works that became, one might say, the Bible of the new belief in the power of the stars, were translated into Greek, undoubtedly in Alexandria, about the year 150 before our era.[4] About the same time the Chaldean genethlialogy began to spread in Italy, with regard to which Berosus, a priest of the god Baal, who came to Babylon from the island of Cos, had previously succeeded in arousing the curiosity of the Greeks. In 139 a praetor expelled the "Chaldaei" from Rome, together with the Jews. But all the adherents of the Syrian goddess, of whom there was quite a number in the Occident, were patrons and defenders of these Oriental {164} prophets, and police measures were no more successful in stopping the diffusion of their doctrines, than in the case of the Asiatic mysteries. In the time of Pompey, the senator Nigidius Figulus, who was an ardent occultist, expounded the barbarian uranography in Latin. But the scholar whose authority contributed most to the final acceptance of sidereal divination was a Syrian philosopher of encyclopedic knowledge, Posidonius of Apamea, the teacher of Cicero.[5] The works of that erudite and religious writer influenced the development of the entire Roman theology more than anything else.