Roman Catholicism was the sole established religion in the Holy Roman Empire until the advent of the Protestant Reformation changed this drastically. In the early 16th century abuses (such as selling indulgences in the Catholic Church) occasioned much discontent, and a general desire for reform emerged. In 1517 the Reformation began with the publication of Martin Luther's 95 Theses detailing 95 assertions which Luther believed showed corruption and misguidance within the Catholic Church. The Reformation demonstrated Luther's disagreement both with the way in which the higher clergy used and abused power, and with the very idea of a papacy. In 1521 the Diet of Worms outlawed Luther, but the Reformation spread rapidly. Luther translated the Bible from Latin to German, establishing the basis of the modern German language. A curious fact is that Luther spoke a dialect which had minor importance in the German language of that time. After the publication of his Bible translation, his dialect evolved into what is now standard modern German.