Catechism of the Catholic Church §642 — excerpt
Everything that happened during those Paschal days involves each of the apostles - and Peter in particular - in the building of the new era begun on Easter morning.
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.