Roman Catechism 11.44

Chapter 11 — Part I: The Creed — Article IX: The Holy Catholic Church; the Communion of Saints

Section 44. Moreover to this Church, built upon the foundation of the apostles and prophets, belong all the faithful who have existed from Adam to the present day, or who shall exist, in the profession of the true faith, to the end of time; all of whom are founded and raised upon the one corner-stone, Christ, who made both one, and announced peace to them that are near and to them that are far.