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

[187] NOW when Trypho knew what had befallen Demetrius, he was no longer firm to Antiochus, but contrived by subtlety to kill him, and then take possession of his kingdom; but the fear that he was in of Jonathan was an obstacle to this his design, for Jonathan was a friend to Antiochus, for which cause he resolved first to take Jonathan out of the way, and then to set about his design relating to Antiochus; but he judging it best to take him off by deceit and treachery, came from Antioch to Bethshan, which by the Greeks is called Scythopolis, at which place Jonathan met him with forty thousand chosen men, for he thought that he came to fight him; but when he perceived that Jonathan was ready to fight, he attempted to gain him by presents and kind treatment, and gave order to his captains to obey him, and by these means was desirous to give assurance of his good-will, and to take away all suspicions out of his mind, that so he might make him careless and inconsiderate, and might take him when he was unguarded. He also advised him to dismiss his army, because there was no occasion for bringing it with him when there was no war, but all was in peace. However, he desired him to retain a few about him, and go with him to Ptolemais, for that he would deliver the city up to him, and would bring all the fortresses that were in the country under his dominion; and he told him that he came with those very designs.