Roman Catholic opinion
<p>Roman Catholic opinion: the Church is built first on the personal authority and leadership of the Apostle Peter, and subsequently on God-ordained successors to Peter, referred to as "Popes". Just as the Apostle Peter was an authoritative conduit for new revelation from God to the Church, so each Pope possesses the same mandate and authority to provide new Divine revelation to the Church, which becomes equally authoritative as the canonized Scriptures.</p>
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<b>The Council of Ephesus, 431 AD</b>
No one doubts, in fact, it is obvious to all ages that the holy and most Blessed Peter, head and Prince of the Apostles, the pillar of faith, and the foundation of the Catholic Church, received the keys of the kingdom from our Lord Jesus Christ, the savior and redeemer of the human race.
<b>First Vatican Council, 1870, The First Dogmatic Constitution of the Church of Christ, Chapter 2</b>
Therefore if anyone says that the blessed Apostle Peter was not constituted by Christ the Lord as the Prince of all the Apostles and the visible head of the whole Church militant, or that he received immediately and directly from Jesus Christ our Lord only a primacy of honor and not a true and proper primacy of jurisdiction: anathema sit.
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