Catechism of the Catholic Church §745 — excerpt
The Son of God was consecrated as Christ (Messiah) by the anointing of the Holy Spirit at his Incarnation (cf Ps 2:6-7).
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.