Catechism of the Catholic Church §2627 — excerpt
TWO fundamental forms express this movement: our prayer ascends in the Holy Spirit through Christ to the Father - we bless him for having blessed us; it implores the grace of the Holy Spirit that descends through Christ from the Father - he blesses us.
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.