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

[14] But when Hyrcanus was brought into Parthia the king Phraates treated him after a very gentle manner, as having already learned of what an illustrious family he was; on which account he set him free from his bonds, and gave him a habitation at Babylon, ¹ where there were Jews in great numbers. These Jews honored Hyrcanus as their high priest and king, as did all the Jewish nation that dwelt as far as Euphrates; which respect was very much to his satisfaction. But when he was informed that Herod had received the kingdom, new hopes came upon him, as having been himself still of a kind disposition towards him, and expecting that Herod would bear in mind what favor be had received from him; and when he was upon his trial, and when he was in danger that a capital sentence would be pronounced against him, he delivered him from that danger, and from all punishment. Accordingly, he talked of that matter with the Jew that came often to him with great affection; but they endeavored to retain him among them, and desired that he would stay with them, putting him in mind of the kind offices and honors they did him, and that those honors they paid him were not at all inferior to what they could pay to either their high priests or their kings; and what was a greater motive to determine him, they said, was this, that he could not have those dignities [in Judea] because of that maim in his body, which had been inflicted on him by Antigonus; and that kings do not use to requite men for those kindnesses which they received when they were private persons, the height of their fortune making usually no small changes in them.