On the other hand, Boniface, not trusting himself in Rome, withdrew to the secure height of Orvieto, and thence, on the 14th of December, 1297, issued a terrible bull for a crusade against them, granting plenary indulgence to all, (such was the Christian temper of the times, and so literally were the violent seizing upon the kingdom of Heaven,) granting plenary indulgence to all who would take up arms against these rebellious sons of the Church and march against their chief stronghold, their ‘ alto seggio ’ of Palestrina. They and their adherents had already been excommunicated and put under the ban of the Church; they had been stripped of all dignities and privileges; their property had been confiscated; and they were now by this bull placed in the position of enemies, not of the Pope alone, but of the Church Universal. Troops gathered against them from all quarters of Papal Italy. Their lands were ravaged, and they themselves shut up within their stronghold; but for a long time they held out in their ancient high-walled mountaintown.