👉 Antipapacy is a concept in Christian theology that refers to the act of rejecting papal authority and allegiance. It is often associated with the rejection of the Pope as the supreme pontiff of the Catholic Church, and it is commonly used by Protestants who reject Roman Catholicism. In Protestantism, antipapacy involves the rejection of papal authority in favor of a literal interpretation of scripture, which may include rejecting the Papal Decree 451, which declared that the