Catechism of the Catholic Church §1037 — excerpt
God predestines no one to go to hell; for this, a willful turning away from God (a mortal sin) is necessary, and persistence in it until the end.
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.
Also cites: Council of Orange II (529): DS 397 · Council of Trent (1547):1567 · Roman Missal, EP I (Roman Canon) 88