Catechism of the Catholic Church §542 — excerpt
Christ stands at the heart of this gathering of men into the "family of God". By his word, through signs that manifest the reign of God, and by sending out his disciples, Jesus calls all people to come together around him.
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.
Also cites: LG 3