Catechism of the Catholic Church §589 — excerpt
Jesus gave scandal above all when he identified his merciful conduct toward sinners with God's own attitude toward them. He went so far as to hint that by sharing the table of sinners he was admitting them to the messianic banquet.
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.