Catechism of the Catholic Church §658 — excerpt
Christ, "the first-born from the dead" (Col 1:18), is the principle of our own resurrection, even now by the justification of our souls (cf Rom 6:4), and one day by the new life he will impart to our bodies (cf Rom 8:11).
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.