Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[8] But there was a certain friend of Hyrcanus, an Idumean, called Antipater, who was very rich, and in his nature an active and a seditious man; who was at enmity with Aristobulus, and had differences with him on account of his good-will to Hyrcanus. It is true that Nicolatls of Damascus says, that Antipater was of the stock of the principal Jews who came out of Babylon into Judea; but that assertion of his was to gratify Herod, who was his son, and who, by certain revolutions of fortune, came afterward to be king of the Jews, whose history we shall give you in its proper place hereafter. However, this Antipater was at first called Antipas, ¹ and that was his father's name also; of whom they relate this: That king Alexander and his wife made him general of all Idumea, and that he made a league of friendship with those Arabians, and Gazites, and Ascalonites, that were of his own party, and had, by many and large presents, made them his fast friends. But now this younger Antipater was suspicious of the power of Aristobulus, and was afraid of some mischief he might do him, because of his hatred to him; so he stirred up the most powerful of the Jews, and talked against him to them privately; and said that it was unjust to overlook the conduct of Aristobulus, who had gotten the government unrighteously, and ejected his brother out of it, who was the elder, and ought to retain what belonged to him by prerogative of his birth. And the same speeches he perpetually made to Hyrcanus; and told him that his own life would be in danger, unless he guarded himself, and got shut of Aristobulus; for he said that the friends of Aristobulus omitted no opportunity of advising him to kill him, as being then, and not before, sure to retain his principality. Hyrcanus gave no credit to these words of his, as being of a gentle disposition, and one that did not easily admit of calumnies against other men. This temper of his not disposing him to meddle with public affairs, and want of spirit, occasioned him to appear to spectators to be degenerous and unmanly; while. Aristo-bulus was of a contrary temper, an active man, and one of a great and generous soul.