Montanism, known by its adherents as the New Prophecy, was an early Christian movement of the late 2nd century, later referred to by the name of its founder, Montanus. Montanism held views about the basic tenets of Christian theology similar to those of the wider Christian Church, but it was labelled a heresy for its belief in new prophetic figures. The prophetic movement called for a reliance on the spontaneity of the Holy Spirit and a more conservative personal ethic.

Pope Eleutherius, also known as Eleutherus, was the bishop of Rome from c. 174 to his death. His pontificate is alternatively dated to 171-185 or 177-193. He is venerated as a saint in the Catholic Church.