The German prince’s Evangelical interpretation of, “cuius regio, eius religio” ("Whose realm, his religion" ) at the Diet of Speyer in 1526, gave the Landgrave authority to garner enough political support to start a war effort, or at least a defensive effort. This effort resulted in the foundation of: the League of Gotha, then the League of Torgau, and finally the Schmalkaldic League. The Holy Roman Empire’s elector John of Saxony, Philip’s most powerful ally, agreed to, “oppose the terms of the Edict of Worms, which outlawed Martin Luther and demanded his punishment as a heretic”. The Schmalkaldic League assumed the role of protectors of Protestant lands, the members of which were formally recognized in the First Agreement of the Schmalkaldic League in 1531.