Catechism of the Catholic Church §2048 — excerpt
The precepts of the Church concern the moral and Christian life united with the liturgy and nourished by it.
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.