Zwinglianism Philip was especially anxious to prevent division over the subject of the Eucharist. Through him Huldrych Zwingli was invited to Germany, and Philip thus prepared the way for the celebrated Marburg Colloquy. Although the attitude of the Wittenberg theologians frustrated his attempts to bring about harmonious relations, and although the situation was further complicated by the position of Georg, Margrave of Brandenburg-Ansbach, who demanded a uniform confession and a uniform church order, Philip held that the differences between the followers of Martin Bucer and the followers of Luther in their sacramental theories admitted honest disagreement, and that Holy Scripture could not resolve the differences definitively. The result was that Philip was suspected of a tendency toward Zwinglianism. His sympathy for the Reformers associated with Zwingli in Switzerland and Bucer in Strasburg was intensified by the anger of the emperor at receiving from Philip a statement of Protestant tenets composed by the ex-Franciscan Lambert, and the landgrave's failure to secure any common action on the part of the Protestant powers regarding the approaching Turkish war. Philip eagerly embraced Zwingli's plan of a great Protestant alliance to extend from the Adriatic to Denmark to keep the Holy Roman Emperor from crossing into Germany. This association caused some coldness between himself and the followers of Luther at the Diet of Augsburg in 1530, especially when he propounded his irenic policy to Melanchthon and urged that all Protestants should stand together in demanding that a general council alone should decide religious differences. This was supposed to be indicative of Zwinglianism, and Philip soon found it necessary to explain his exact position on the question of the Eucharist, whereupon he declared that he fully agreed with the Lutherans, but disapproved of persecuting the Swiss. The arrival of the emperor put an end to these disputes for the time being. But when Charles V demanded that the Protestant representatives should take part in the procession of Corpus Christi, and that Protestant preaching should cease in the city, Philip bluntly refused to obey. He now sought in vain to secure a modification of the tenth article of the Augsburg Confession, but when the position of the Upper Germans was officially rejected, Philip left the Diet directing his representatives manfully to uphold the Protestant position, and to keep general, not particular, interests constantly in view. At this time he offered Luther a refuge in his own territories