Martin Luther posted 95 theses criticizing the Catholic Church's sale of indulgences and other abuses on the door of the Wittenberg Church in 1517, sparking the Protestant Reformation. Luther argued that salvation comes through faith alone, not works or indulgences, and he translated the Bible into German so ordinary people could read it. His writings spread rapidly and attracted many followers, though the Catholic Church condemned Luther and his teachings. The Reformation led to divisions in Christianity between Protestantism and Catholicism that still exist today.