Catechism of the Catholic Church §2823 — excerpt
"He has made known to us the mystery of his will, according to his good pleasure that he set forth in Christ . . to gather up all things in him, things in heaven and things on earth.
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.