Catechism of the Catholic Church §2600 — excerpt
The Gospel according to St. Luke emphasizes the action of the Holy Spirit and the meaning of prayer in Christ's ministry. Jesus prays before the decisive moments of his mission: before his Father's witness to him during his baptism and Transfiguration, and before his own fulfillment of the Father's plan of love by his Passion.
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.