And now a question here arises, How is it that the high priest could exercise such powers and arrest his co-religionists in a foreign town? The answer to this sheds a flood of light upon the state of the Jews of the Dispersion, as they were called. I have already said a little on this point, but it demands fuller discussion.[22] The high priest at Jerusalem was regarded as a kind of head of the whole nation. He was viewed by the Romans as the Prince of the Jews,[23] with whom they could formally treat, and by whom they could manage a nation which, differing from all others in its manners and customs, was scattered all over the world, and often gave much trouble. Julius Cæsar laid down the lines on which Jewish privileges and Roman policy were based, and that half a century before the Christian era. Julius Cæsar had been greatly assisted in his Alexandrian war by the Jewish high priest Hyrcanus, so he issued an edict in the year 47 B.C., which, after reciting the services of Hyrcanus, proceeds thus, "I command that Hyrcanus and his children do retain all the rights of the high priest, whether established by law or accorded by courtesy; and if hereafter any question arise touching the Jewish polity, I desire that the determination thereof be referred to him"; an edict which, confirmed as it was again and again, not only by Julius Cæsar, but by several subsequent emperors, gave the high priest the fullest jurisdiction over the Jews, wherever they dwelt, in things pertaining to their own religion.[24] It was therefore in strictest accord with Roman law and custom that, when Saul wished to arrest members of the synagogue at Damascus, he should make application to the high priest Theophilus for a warrant enabling him to effect his purpose. [22] See vol. i., pp. 174-6, 271. [23] The decree of Julius Cæsar, upon which the Jewish privileges were built, expressly calls the high priest the ethnarch (ἐθνάρχης), or ruler, of the Jews. See Josephus, _Antiqq._, XIV., x., 3. [24] This point is worked out at great length and with a multitude of references in Lewin's _Life of St. Paul_, ch. iv., vol. i., pp. 44-7. Josephus, in his _Antiquities_, book xiv., ch. x., gives the words of Cæsar's decree. In ch. viii. of the same book he describes the warlike assistance lent by the Jews to Julius Cæsar in his Egyptian campaign.