Chapter 11 — Part I: The Creed — Article IX: The Holy Catholic Church; the Communion of Saints
Section 14. The Church consists principally of two parts, the one called the Church triumphant; the other, the Church militant. The Church triumphant is that most glorious and happy assemblage of blessed spirits, and of those who have triumphed over the world, the flesh, and the iniquity of Satan, and are now exempt and safe from the troubles of this life and enjoy everlasting bliss. The Church militant is the society of all the faithful still dwelling on earth. It is called militant, because it wages eternal war with those implacable enemies, the world, the flesh and the devil.