Catechism of the Catholic Church §936 — excerpt
The Lord made St. Peter the visible foundation of his Church. He entrusted the keys of the Church to him. the bishop of the Church of Rome, successor to St.
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.