Catechism of the Catholic Church §2059 — excerpt
"). They belong to God's revelation of himself and his glory. the gift of the Commandments is the gift of God himself and his holy will.
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.