Johann Eck was more highly esteemed in Rome than in Germany, where he induced the universities of
Cologne and
Louvain to condemn Luther's writings, but failed to enlist the German princes. In January 1520, he visited Italy at the invitation of
Pope Leo X, to whom he presented his latest work
De primate Petri adversus Ludderum (Ingolstadt, 1520) for which he was rewarded with the nomination to the office of
papal protonotary, although his efforts to urge the
Curia to decisive action against Luther were unsuccessful for some time. In July he returned to Germany with the bull
Exsurge Domine directed against Luther's writings, in which forty-one propositions of Luther were condemned as heretical or erroneous. He now believed himself in a position to crush not only the "Lutheran
heretics", but also his humanist critics. The effect of the publication of the bull, however, made this difficult. Universities and humanists were at one in denunciation of the outrage; and, due the attitude of the people, Eck was barely able to escape from
Saxony alive. At
Meissen,
Brandenburg, and
Merseburg, he succeeded in giving the papal measure due official publicity, but at
Leipzig he was the object of the ridicule of the student body and was compelled to flee by night to
Freiberg, where he was again prevented from proclaiming the bull. At
Erfurt the students tore the bull down and threw it into the water, while in other places the papal decree was subjected to still greater insults. In his anger he appealed to force, and his
Epistola ad Carolum V (18 February 1521) called on the emperor to take measures against Luther, an appeal soon answered by the
Edict of Worms (May 1521). In 1521 and 1522 Eck was again in Rome, reporting on the results of his
nunciature. On his return from his second visit he was the prime mover in the promulgation of the Bavarian religious edict of 1522, which practically established the senate of the
University of Ingolstadt as a tribunal of the
Inquisition. In return for this action of the duke, who had at first been opposed to the policy of repression, Eck obtained for him, during a third visit to Rome in 1523, valuable ecclesiastical concessions. He continued unabated in his zeal against the reformers, publishing eight major works from 1522 to 1526. Wealth and power were included in the aspirations of Eck. He appropriated the revenues of his parish of
Günzburg, while he relegated its duties to a vicar. Twice he visited Rome as a diplomatic representative of the
Bavarian court to obtain sanction for the establishment of a court of inquisition against the Lutheran teachings at Ingolstadt. The first of these journeys, late in the autumn of 1521, was fruitless on account of the death of
Leo X, but his second journey two years later, in 1523, was successful. Eck was the prime mover in many heresy trials, including that of
Leonhard Kaiser, whose history was published by Luther. ==Zwingli and his followers==