“This consideration too clarifies the great error of those others as well who boldly venture to explain and interpret the words of God by their own judgment, misusing their reason and holding the opinion that these words are like a human work. God Himself has set up a living authority to establish and teach the true and legitimate meaning of His heavenly revelation. This authority judges infallibly all disputes which concern matters of faith and morals, lest the faithful be swirled around by every wind of doctrine which springs from the evilness of men in encompassing error. And this living infallible authority is active only in that Church which was built by Christ the Lord upon Peter, the head of the entire Church, leader and shepherd, whose faith He promised would never fail. This Church has had an unbroken line of succession from Peter himself; these legitimate pontiffs are the heirs and defenders of the same teaching, rank, office and power. And the Church is where Peter is, and Peter speaks in the Roman Pontiff, living at all times in his successors and making judgment, providing the truth of the faith to those who seek it. The divine words therefore mean what this Roman See of the most blessed Peter holds and has held.
For this mother and teacher of all the churches has always preserved entire and unharmed the faith entrusted to it by Christ the Lord. Furthermore, it has taught it to the faithful, showing all men truth and the path of salvation. Since all priesthood originates in this church, the entire substance of the Christian religion resides there also. The leadership of the Apostolic See has always been active, and therefore because of its preeminent authority, the whole Church must agree with it. The faithful who live in every place constitute the whole Church. Whoever does not gather with this Church scatters.”
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