As early as the middle of the 2nd century BCE the Jewish author of the third book of the Oracula Sibyllina addressed the "chosen people," saying: "Every land is full of thee and every sea." The most diverse witnesses, such as Strabo, Philo, Seneca, Luke (the author of the Acts of the Apostles), Cicero, and Josephus, all mention Jewish populations in the cities of the Mediterranean basin. See also History of the Jews in India and History of the Jews in China for pre-Roman (and post-) diasporac populations. King Agrippa I, in a letter to Caligula, enumerated among the provinces of the Jewish diaspora almost all the Hellenized and non-Hellenized countries of the Orient. This enumeration was far from complete as Italy and Cyrene were not included. The epigraphic discoveries from year to year augment the number of known Jewish communities but must be viewed with caution due to the lack of precise evidence of their numbers. According to Josephus, the next most dense Jewish population after the Land of Israel and Babylonia was in Syria, particularly in Antioch, and Damascus, where 10,000 to 18,000 Jews were massacred during the great insurrection. Philo gives the number of Jewish inhabitants in Egypt as one million, one-eighth of the population. Alexandria was by far the most important of the Egyptian Jewish communities.
To judge by the accounts of wholesale massacres in 115 BCE, the number of Jewish residents in Cyrenaica, Cyprus, and Mesopotamia was also large. At the commencement of the reign of Caesar Augustus, there were over 7,000 Jews in Rome (this is the number that escorted the envoys who came to demand the deposition of Archelaus). Finally, if the sums confiscated by the governor Lucius Valerius Flaccus in the year 62/61 BCE represented the tax of a didrachma per head for a single year, it would imply that the Jewish population of Asia Minor numbered 45,000 adult males, for a total of at least 180,000 persons.