This declaration satisfied his friends, though it did not satisfy the members of the diet. Luther was permitted to retire. He had gained the confidence of the nation. From that time, he was its idol, and the acknowledged leader of the greatest insurrection of human intelligence which modern times have seen. The great principles of the reformation were declared. The great hero of the Reformation had planted his cause upon a rock. And yet his labors had but just commenced. Henceforth, his life was toil and vexation. New difficulties continually arose. New questions had to be continually settled. Luther, by his letters, was every where. He commenced the translation of the Scriptures; he wrote endless controversial tracts; his correspondence was unparalleled; his efforts as a preacher were prodigious. But he was equal to it all; was wonderfully adapted to his age and circumstances.
About this time commenced his voluntary imprisonment at Wartburg, among the Thuringian forests: he being probably conducted thither by the orders of the elector of Saxony. Here he was out of sight, but not out of mind; and his retirement, under the disguise of a knight, gave him leisure for literary labor. In the old Castle of Wartburg, a great part of the Scriptures was translated into that beautiful and simple version, which is still the standard of the German language.