Papacy & the Church
Church Authority and the Magisterium
Christ established a living teaching authority in his Church, the Magisterium, exercised by the Pope and bishops in communion with him, to authentically interpret Scripture and Tradition for every generation.
Catholic teaching
The Church teaches that the task of authentically interpreting the Word of God, whether in written Scripture or Sacred Tradition, has been entrusted to the living teaching office of the Church alone, the Magisterium, which exercises this authority in the name of Christ. This is not a power over the Word of God but a service to it, since the Magisterium does not invent new revelation but faithfully guards, explains, and transmits what has been handed down. Scripture, Tradition, and the Magisterium are so linked that none of them can stand without the others, all three working together, each in its own way, under the action of the Holy Spirit, to contribute to the salvation of souls.
Biblical foundation
Jesus tells the seventy-two disciples he sends out that 'whoever listens to you listens to me, and whoever rejects you rejects me,' identifying his own authority with that of his commissioned representatives, an authority that extends beyond the original Twelve. Paul calls the Church, not the Bible alone, 'the pillar and bulwark of the truth,' assigning the Church itself a foundational teaching role. The Jerusalem council in Acts 15 issues a binding decree for all the churches, a corporate teaching act with apostolic authority that Scripture itself narrates approvingly as guided by the Holy Spirit.
Scripture references
Historical evidence
From the earliest post-apostolic period, bishops exercised recognized teaching authority to settle disputes, as when Pope Clement I wrote to the church at Corinth around AD 96 to resolve a leadership crisis there with an authority the Corinthians accepted, a letter so respected it was read liturgically in some churches for generations, alongside Scripture. St. Irenaeus, around AD 180, appealed to the teaching authority of bishops in apostolic succession, especially the church of Rome, as the standard for distinguishing authentic apostolic teaching from Gnostic innovation, showing that a living teaching authority beyond private interpretation of texts was assumed as normative from the Church's earliest centuries.
The Church Fathers
“Where the Church is, there is the Spirit of God; and where the Spirit of God is, there is the Church, and every kind of grace.”
“You will give us great joy and gladness if... you shall have obeyed the words written by us through the Holy Spirit.”