The Gates of Hell Shall Not Prevail

From the Dogmatic Constitution Pastor Aeternus of Blessed Pope Pius IX:CHAPTER I.ON THE INSTITUTION OF THE APOSTOLIC PRIMACY IN BLESSED PETER. We therefore teach and declare that, according to the testimony of the Gospel, the primacy of jurisdiction over the universal Church of God was immediately and directly promised and given to Blessed Peter the Apostle by Christ the Lord. For it was to Simon alone, to whom he had already said, "You shall be called Cephas" (John 1:42), that the Lord, after the confession made by him, saying, "You are the Christ, the Son of the living God", addressed these solemn words: "Blessed are you, Simon son of Jonah. For flesh and blood has not revealed this to you, but my Father, who is in heaven. And I say to you, that you are Peter, and upon this rock I will build my Church, and the gates of Hell shall not prevail against it. And I will give you the keys of the kingdom of heaven. And whatever you shall bind on earth shall be bound, even in heaven. And whatever you shall release on earth shall be released, even in heaven." (Mt 16:16-19). And it was upon Simon alone that Jesus, after His Resurrection, bestowed the jurisdiction of Chief Pastor and Ruler over all His fold, by the words: "Feed my lambs. Feed my sheep." (John 21:15-17). At open variance with this clear doctrine of Holy Scripture, as it has ever been understood by the Catholic Church, are the perverse opinions of those who, while they distort the form of government established by Christ the Lord in His Church, deny that Peter, in his single person, preferably to all the other Apostles, whether taken separately or together, was endowed by Christ with a true and proper primacy of jurisdiction; or of those who assert that the same primacy was not bestowed immediately and directly upon Blessed Peter himself, but upon the Church, and through the Church on Peter as her Minister. If anyone, therefore, shall say that Blessed Peter the Apostle was not appointed the Prince of all the Apostles and the visible Head of the whole Church Militant; or that the same, directly and immediately, received from the same, Our Lord Jesus Christ, a primacy of honor only, and not of true and proper jurisdiction; let him be anathema. CHAPTER II.ON THE PERPETUITY OF THE PRIMACY OF BLESSED PETERIN THE ROMAN PONTIFFS. That which the Prince of Shepherds and great Shepherd of the sheep, Jesus Christ our Lord, established in the person of the Blessed Apostle Peter to secure the perpetual welfare and lasting good of the Church, must, by the same institution, necessarily remain unceasingly in the Church; which, being founded upon the Rock, will stand firm to the end of the world. For none can doubt, and it is known to all ages, that the holy and Blessed Peter, the Prince and Chief of the Apostles, the pillar of the faith and foundation of the Catholic Church, received the keys of the kingdom from Our Lord Jesus Christ, the Savior and Redeemer of mankind, and lives, presides, and judges, to this day and always, in his successors the Bishops of the Holy See of Rome, which was founded by him, and consecrated by his blood. Thus, whosoever succeeds Peter in this Chair, obtains, by the institution of Christ Himself, the Primacy of Peter over the whole Church. Therefore, the disposition of truth remains, and Blessed Peter, persevering in the fortitude of the Rock that he accepted, has not relinquished the governance of the Church that he received. Therefore, it has always been necessary that each Church -- that is, those who are the faithful everywhere -- should agree with the Roman Church, because of the greater power of the principality that She has received, in order that, all being joined together in the unity of that Seat, from the veneration of which the rights of communion flows to all, might associate closely as members of one Head, in the compact unity of the body.If then, any should deny that it is by the institution of Christ the Lord and by Divine right, that Blessed Peter should have a perpetual line of successors in the Primacy over the Universal Church, or that the Roman Pontiff' is the successor of Blessed Peter in this primacy; let him be anathema.