Catechism of the Catholic Church §1507 — excerpt
The risen Lord renews this mission ("In my name . . ") and confirms it through the signs that the Church performs by invoking his name.
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.