The ever-increasing reaction against the corruption of the times, which had already found expression in Waldhauser's sermons, caused Milič in 1363 to renounce all these dignities. In spite of the remonstrances of his Archbishop, Ernest of Pardubic, he decided to devote himself entirely to the preaching of the word of God. He first preached for a short time in the small town of Bischof-Teinitz, and then in several churches at Prague. The sermons of Milič vigorously inveigh against the immorality and corruption of the times, and do not spare the secular clergy and the monks. As Milič preached in Bohemian, his teaching was accessible to the great mass of the people, whom Conrad's German sermons had not reached. The constant contemplation of the evils of his time, of poverty and vice as he saw them in the streets of Prague on the rare occasions when he left his studies for a few moments, produced a remarkable, though not at that period exceptional, effect on the imaginative mind of Milič. It seemed to him that all the preliminary symptoms described in the Revelation of St. John had already occurred. He therefore came to the conclusion that Antichrist was about to appear--he is said to have fixed on the years 1365 to 1367 as the date of his arrival--and sometimes even that he had already come. In a sermon preached before Charles IV., Milič openly denounced that sovereign as the "greatest Antichrist." Though he was imprisoned in consequence of this sermon, Milič remained but a short time in prison. The magnanimous prince condoned the offence against his person in consideration of the great benefits which Milič had conferred on Bohemia, both by his eloquent preaching and by the example of his own spotless and ascetic life. In 1367 Milič proceeded on a journey to Rome, where Pope Urban V. was then expected from Avignon; he wished to inform the Pope of his conviction of the impending end of the world and arrival of Antichrist. Milič arrived in Rome before the Pope, and, as he himself tells us in his _Libellus de Antichristo_, he caused a placard to be published on the doors of St. Peter's Church announcing that he would shortly preach a sermon declaring that Antichrist had come. Milič was immediately arrested in consequence of this act, and imprisoned in a monastery of the Minorite Friars. The errors in doctrine which he was accused of were probably a mere pretext for proceeding against a man whose eloquent sermons against the avarice and immorality of the clergy had rendered him obnoxious to many monks. As the biographer of Milič tells us, "The friars of the mendicant orders were greatly incensed against him (Milič) because of his sermons on the admission of simoniacs to religious orders, and on the possession of worldly goods by clerical persons, both men and women. He was therefore thrown into heavy bonds, together with Theodoric the hermit, a priest of saintly memory, who had accompanied him."