Catechism of the Catholic Church §1343 — excerpt
It was above all on "the first day of the week," Sunday, the day of Jesus' resurrection, that the Christians met "to break bread." From that time on down to our own day the celebration of the Eucharist has been continued so that today we…
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.