In 1530, in presence of the emperor and his court at Augsburg, Josel had a public disputation with the baptized Jew Antonius Margaritha, who had published a pamphlet Der gantze Jüdisch Glaub (The Whole Jewish Belief) full of libelous accusations against Judaism. The disputation terminated in a decided victory for Josel, who obtained Margaritha's expulsion from the realm. (Despite this legal decision, this work would be repeatedly reprinted and cited by anti-semites over the coming centuries.) At this same Reichstag, Josel defended the Jews against the strange accusation that they had been the cause of the apostasy of the Lutherans. Josel's most important action at the Reichstag of Augsburg was the settlement of rules for business transactions of the Jews. They were forbidden to exact too high a rate of interest, to call a negligent debtor before a foreign court of justice, etc. Josel announced these articles to the German Jews as "governor of the Jewish community in Germany", by means of takkanot, a modification of Jewish law. In Bohemia While still occupied with the Augsburg articles, Josel had to hurry to the court of Charles V of Brabant and Flanders in order to defend the calumniated German Jews there (1531). In this to him most inhospitable country—for no Jews were living there then—he spent three months, occupying himself, when he was not officially engaged, with Hebrew language studies. Though his life was once in danger, he succeeded in attaining the object of his journey. At the Reichstag of Regensburg (1532) he tried in vain to dissuade the proselyte Solomon Molko from carrying out his fantastic plan to arm the German Jews and to offer them as a help to the emperor in his wars with the Turks. Molko did not follow Josel's advice, and soon after was burned as a heretic. In 1534 Josel went to Bohemia to make peace between the Jews of Prague and those of the small Bohemian town of Horovice (Horowitz). He succeeded in his mission, but the Jews of Horowitz plotted against his life, and he had to seek refuge in the castle of Prague. In 1535, Josel traveled to Brandenburg-Ansbach to intercede with the margrave Georg in favor of the Jews of Jägerndorf, who had been falsely accused and thrown into prison; and he obtained their freedom. Two years later Josel tried to help the Saxon Jews, who were threatened with expulsion by