Earlier in 1520 Pope #LeoX issued the bull #ExsurgeDomine, condemning 41 of the #95Theses issued by #MartinLuther and threatening #excommunication. On #ThisDayInHistory, Luther refused to recant and burnt a copy of the bull publically, and so he was excommunicated on 3 Jan. 1521.

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#Luther declared that sola scriptura (scripture alone) was the basis of Christianity and, as he was not mentioned in the Bible,
the Pope had no power. The debate led to Pope #LeoX banning Luther's views from being written or preached in his June 1520 papal bull Exsurge Domine.