Papal infallibility

Papal primacy, supremacy and infallibility
Overview Primacy of Peter & Papal primacy Papal supremacy Papal infallibility First Vatican Council § Papal infallibility
Patriarchs compared to popes Papal primacy Episcopal see § Catholic Church Apiarius of Sicca § Appeal to the bishop of Rome Pentarchy § After the East–West Schism Pope John XIX § Life Gregory II Youssef § First Vatican Council Ravenna Document Eastern Orthodox opposition to papal supremacy
Ecumenical councils compared to popes Conciliarity Conciliarism § Modern conciliarism Ecumenical council § Acceptance of the councils To the Christian Nobility of the German Nation § The Third Wall: Authority to Call a Council Ultrajectines
Catholic episcopal councils compared to popes Febronianism Christus Dominus § Controversy The Ratzinger Report
Political rulers compared to popes Gallicanism Patronato real Josephinism Febronianism Cisalpinism Appointment of Catholic bishops § Centralization of papal power Concordat § List Papal deposing power
Existing dogma compared to popes Development of doctrine Cum ex apostolatus officio Pascendi Dominici gregis
Objections and controversy Ecclesiastical differences between the Catholic Church and the Eastern Orthodox Church § Papal authority Ignaz von Döllinger § Papal authority Ultramontanism § Position of other apostolic churches Papal infallibility § Objections Old Catholic Church § First Vatican Council, Old Catholic Union of Utrecht Sedevacantism Josip Juraj Strossmayer § Catholic diplomacy Ultrajectine
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Papal infallibility is a dogma of the Catholic Church which states that, in virtue of the promise of Jesus to Peter, the Pope when he speaks ex cathedra is preserved from the possibility of error on doctrine "initially given to the apostolic Church and handed down in Scripture and tradition".^[1] It does not mean that the pope cannot sin or otherwise err in some capacity, though he is prevented by the assistance of the Holy Spirit from issuing heretical teaching even in his non-infallible Magisterium, as a corollary of indefectibility.^[2] This doctrine, defined dogmatically at the First Vatican Council of 1869–1870 in the document Pastor aeternus, is claimed to have existed in medieval theology and to have been the majority opinion at the time of the Counter-Reformation.^[3]

The doctrine of infallibility relies on one of the cornerstones of Catholic dogma, that of papal supremacy, whereby the authority of the pope is the ruling agent as to what are accepted as formal beliefs in the Catholic Church.^[4] The use of this power is referred to as speaking ex cathedra.^[5] "Any doctrine 'of faith or morals' issued by the pope in his capacity as successor to St. Peter, speaking as pastor and teacher of the Church Universal [Ecclesia Catholica], from the seat of his episcopal authority in Rome, and meant to be believed 'by the universal church,' has the special status of an ex cathedra statement. Vatican Council I in 1870 declared that any such ex cathedra doctrines have the character of infallibility (session 4, Constitution on the Church 4)."^[6]