CCC 834

Particular Churches are fully catholic through their communion with one of them, the Church of Rome "which presides in charity." St. Ignatius of Antioch, Ad Rom. 1, 1: Apostolic Fathers, II/2, 192; cf. LG 13. "For with this church, by reason of its pre-eminence, the whole Church, that is the faithful everywhere, must necessarily be in accord." St. Irenaeus, Adv. haeres. 3, 3, 2: PG — Patrologia Graeca (Migne)/1, 849; Cf. Vatican Council I DS — Denzinger–Schönmetzer (Enchiridion Symbolorum). Indeed, "from the incarnate Word's descent to us, all Christian churches everywhere have held and hold the great Church that is here [at Rome] to be their only basis and foundation since, according to the Savior's promise, the gates of hell have never prevailed against her." St. Maximus the Confessor, Opuscula theo.: PG — Patrologia Graeca (Migne) 137-140.

Read the full chapter 3. I Believe in the Holy Spirit ¶683–1065