👉 Popeism, also known as papalism or ecclesiastical authority, is a theological and philosophical system that holds that God has ordained certain men to be the head of the Church and govern it. This system was developed by the Catholic Church in the 13th century under Pope Leo X. The pope's role as head of the Church is based on his spiritual authority derived from God. He is appointed by the Pope as a spiritual leader, which means that he has no legal