In the midst of these attacks upon the Church, the pope excommunicated Luther, and in the following year (1521) influenced the Diet of the Holy Roman Empire, assembled at Worms, to pronounce him an outlaw. But the rebel calmly burnt the papal bull and from the imperial ban he was protected by the elector of Saxony. He at once devoted himself to making a new German translation of the Bible, which became very popular and is still prized as a monument in the history of German literature. [Footnote: The first edition of the Bible in German had been printed as early as 1466. At least eighteen editions in German (including four Low German versions) had appeared before Luther issued his German New Testament in 1522.] [Sidenote: Spread of Lutheranism] Within the next few years the Lutheran teachings carried everything before them throughout the northern and central Germanies. Nor are the reasons for Luther's success in defying pope and emperor and for the rapid acceptance of his new theology hard to understand. The movement was essentially popular and national. It appealed to the pious-minded who desired a simplification of Christian dogma and a comprehensible method of salvation. It also appealed to the worldly minded who longed to seize ecclesiastical lands and revenues. Above all, it appealed to the patriots who were tired of foreign despotism and of abuses which they traced directly to the Roman Curia. Then, too, the Emperor Charles V, who remained a loyal Catholic, was too immersed in the difficulties of foreign war and in the manifold administrative problems of his huge dominions to be able to devote much time to the extirpation of heresy in the Germanies. Finally, the character of Luther contributed to effective leadership--he was tireless in flooding the country with pamphlets, letters, and inflammatory diatribes, tactful in keeping his party together, and always bold and courageous. Princes, burghers, artisans, and peasants joined hands in espousing the new cause. [Sidenote: Luther and the German Peasants]