 The Leipzig Debate took place in June and July 1519 at Pleissenburg Castle in Leipzig, Germany.Its purpose was to discuss Martin Luther's teachings, and was initiated and conducted in the presence of George, Duke of Saxony, an opponent of Luther.On 15 June 1520, the Pope warned Luther with the papal bull (edict) "Exsurge Domine" that he risked excommunication unless he recanted 41 sentences drawn from his writings, including the "Ninety-five Theses", within 60 days.