Catechism of the Catholic Church §1345 — excerpt
As early as the second century we have the witness of St. Justin Martyr for the basic lines of the order of the Eucharistic celebration.
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: St. Justin, Apol. 1, 65-67: PG 6, 428-429 · the text before the asterisk (*) is from chap. 67
