Eph 4, 4-6 One Lord, one faith, one baptism

(Eph 4, 4-6) One Lord, one faith, one baptism
[4] one body and one Spirit, as you were also called to the one hope of your call; [5] one Lord, one faith, one baptism; [6] one God and Father of all, who is over all and through all and in all.

(CCC 814) From the beginning, this one Church has been marked by a great diversity which comes from both the variety of God's gifts and the diversity of those who receive them. Within the unity of the People of God, a multiplicity of peoples and cultures is gathered together. Among the Church's members, there are different gifts, offices, conditions, and ways of life. "Holding a rightful place in the communion of the Church there are also particular Churches that retain their own traditions" (LG 13 § 2). The great richness of such diversity is not opposed to the Church's unity. Yet sin and the burden of its consequences constantly threaten the gift of unity. And so the Apostle has to exhort Christians to "maintain the unity of the Spirit in the bond of peace" (Eph 4:3). (CCC 866) The Church is one: she acknowledges one Lord, confesses one faith, is born of one Baptism, forms only one Body, is given life by the one Spirit, for the sake of one hope (cf. Eph 4:3-5), at whose fulfillment all divisions will be overcome. (CCC 173) "Indeed, the Church, though scattered throughout the whole world, even to the ends of the earth, having received the faith from the apostles and their disciples… guards [this preaching and faith] with care, as dwelling in but a single house, and similarly believes as if having but one soul and a single heart, and preaches, teaches and hands on this faith with a unanimous voice, as if possessing only one mouth" (St. Irenaeus, Adv. haeres. 1, 10, 1-2: PG 7/1, 549-552). (CCC 174) "For though languages differ throughout the world, the content of the Tradition is one and the same. The Churches established in Germany have no other faith or Tradition, nor do those of the Iberians, nor those of the Celts, nor those of the East, of Egypt, of Libya, nor those established at the centre of the world…" (St. Irenaeus, Adv. haeres. 1, 10, 1-2: PG 7/1, 552-553). The Church's message "is true and solid, in which one and the same way of salvation appears throughout the whole world" (St. Irenaeus, Adv. haeres. 5, 20, 1: PG 7/2, 1177).