Catechism of the Catholic Church §620 — excerpt
Our salvation flows from God's initiative of love for us, because "he loved us and sent his Son to be the expiation for our sins" (I Jn 4:10).
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.