Infidel (literally "unfaithful") is a term used in certain religions for those accused of unbelief in the central tenets of their own religion, for members of another religion, or for the irreligious. Infidel is an ecclesiastical term in Christianity around which the Church developed a body of theology that deals with the concept of infidelity, which makes a clear differentiation between those who were baptized and followed the teachings of the Church versus those who are outside the faith. The term infidel was used by Christians to describe those perceived as the enemies of Christianity.