Papal primacy and apostolic succession

Catholic doctrine holds that the bishop of Rome, as the successor of Peter, possesses primacy of jurisdiction and a singular role in safeguarding the unity of the Church. Under certain strict conditions, papal infallibility is also affirmed when he solemnly defines a matter of faith and morals, in accordance with the reception of Vatican I in harmony with episcopal collegiality reaffirmed at Vatican II. The Catholic defense invokes Petrine texts, the ancient practice of appealing to Rome, and the historical development of Roman primacy. Common objections come from Orthodox, Anglican, and Protestant churches, which often recognize different degrees of historical primacy but contest the universal and juridical form of Roman primacy. Internally, there is debate over how to harmonize centralization, synodality, episcopal collegiality, and liturgical diversity.

Supportive

John 21:15-17

bible,new-testament,peter,shepherd,papacy

Dialogue in which Jesus commands Peter to shepherd his sheep.

After the resurrection, Jesus entrusts Peter with the task of shepherding his sheep. Catholic tradition uses the text as reinforcement of Peter's singular pastoral role among the apostles. In ecumenical controversy, the passage is debated regarding its value for grounding a permanent universal jurisdiction.

Lumen Gentium 8

council,vatican-ii,church,ecclesiology,pope

Vatican II text on the Church of Christ subsisting in the Catholic Church.

Lumen Gentium 8 states that the Church of Christ subsists in the Catholic Church, governed by the successor of Peter and the bishops in communion with him. The text is crucial for modern Catholic ecclesiology because it combines affirmation of fullness with recognition of elements of sanctification outside the visible boundaries of Roman communion.

Matthew 16:18-19

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Passage about Peter, the keys, and the power to bind and loose.

Jesus tells Simon that he is Peter, speaks of the building of the Church, and gives him the keys of the Kingdom. Catholic interpretation sees this text as an important basis for Petrine primacy and, by extension, for the singular role of the bishop of Rome. Other Christian traditions offer different interpretations of the institutional reach of the passage.

Contrary

Galatians 2:7-8

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Distinction between the missions of Peter and Paul.

Paul describes differentiated ministries associated with Peter and with himself. The passage appears in debates about the scope of Peter's role: some read it as a limited functional primacy, while the Catholic reading integrates it with other texts to support broader Petrine authority. It is a source of interpretive tension, not an isolated conclusion.