Catechism of the Catholic Church §878 — excerpt
Finally, it belongs to the sacramental nature of ecclesial ministry that it have a personal character. Although Chnst's ministers act in communion with one another, they also always act in a personal way.
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.