Catechism of the Catholic Church §2746 — excerpt
When "his hour" came, Jesus prayed to the Father. His prayer, the longest transmitted by the Gospel, embraces the whole economy of creation and salvation, as well as his death and Resurrection.
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.
Whole chapters cited: John 17