But though outwardly the movement prospered beyond expectation all was far from well within. The fundamental principle enunciated by Luther, namely, the rejection of all religious authority, opened the way for new theories and new sects. Quite apart from the controversies between the followers of Luther and Zwingli, which shall be dealt with later, the Anabaptists and others continued to destroy the harmony of the self-styled reformers. The Anabaptists seized the city of Munster, proclaimed a democratic theocracy with John of Leyden, a tailor, at its head, and pronounced their intention of taking the field for the overthrow of tyrants and impostors. But their success was short-lived. Conrad, bishop and prince of Munster, raised an army, laid siege to the city which he captured after a desperate struggle, and put to death the fanatical leaders who had deceived the people (1535-6). Other writers and preachers questioned the doctrines of the Trinity and Incarnation, and advocated many heresies condemned by the early Church, some of them going so far as to insist on the revival of circumcision and the Jewish ceremonial law.[32] Nor did the new teaching exercise an elevating influence on the morals or conduct of its adherents. Luther himself was forced to admit that the condition of affairs had grown worse even than it had been before he undertook his campaign. "Since we have commenced to preach our doctrine," he said in one of his sermons, "the world has grown daily worse, more impious, and more shameless. Men are now beset by legions of devils, and while enjoying the full light of the Gospel are more avaricious, more impure, and repulsive than of old under the Papacy. Peasants, burghers, nobles, men of all degrees, the higher as well as the lowest are all alike slaves to avarice, drunkenness, gluttony, and impurity, and given over to horrible excesses of abominable passions."[33]