 The work was written in the vernacular language German and not in Latin.The Disputation of Leipzig (1519) brought Luther into contact with the humanists, particularly Melanchthon, Reuchlin, Erasmus, and associates of the knight Ulrich von Hutten, who, in turn, influenced the knight Franz von Sickingen.Von Sickingen and Silvester of Schauenburg wanted to place Luther under their protection by inviting him to their fortresses in the event that it would not be safe for him to remain in Saxony because of the threatened papal ban.