Exsurge Domine

is a papal bull promulgated on 15 June 1520 by Pope Leo X. It was written in response to the teachings of Martin Luther which opposed the views of the Catholic Church. The bull censured forty-one propositions summarised from Luther's writings, and threatened him with excommunication unless he recanted within a sixty-day period commencing upon the publication of the bull in Saxony and its neighboring regions.