Aristobulus had inherited not only his father's military ability, but also his plans of extending Judæa in a northeasterly direction. The Ituræans and the Trachonites, who often left their mild, pastoral pursuits for the rougher trade of war, occupied the district surrounding the gigantic Mount Hermon, and eastwards as far as the lovely plain of Damascus. Against these half-barbaric tribes Aristobulus undertook a campaign, probably continuing what his father had commenced. His brother Antigonus, in whose company he had won his first laurels when fighting against the Samaritans and the Syrians, was once more his companion-in-arms. The fortunes of war were favorable to Aristobulus, as they had been to his father; he acquired new territory for Judæa, and, like his father, forced the Judæan religion upon the conquered people. Continued conquests in the same direction would have put the caravan roads leading from the land of the Euphrates to Egypt into the hands of the Judæans; which possession, combined with the warlike courage of the inhabitants and the defensive condition of the fortresses, might have permitted Judæa to attain an important position among the nations. But, as though it had been decreed by Providence that Judæa should not gain influence in such a manner, Aristobulus was forced by severe illness to abandon his conquests and to return to Jerusalem. Antigonus, it is true, carried on the war successfully for some little time; but after his return to the capital, for the celebration of the festivals in the approaching month of Tishri, neither he nor his royal brother was fated ever again to tread the arena of war. Antigonus fell, as was mentioned previously, by the hand of an assassin, and Aristobulus died of a malignant disease, after a reign of one year (106-105).