14. This holy Council first of all turns its attention to the Catholic faithful. Basing itself on scripture and tradition, it teaches that the Church, a pilgrim now on earth, is necessary for salvation: the one Christ is mediator and the way of salvation; he is present to us in his body which is the Church. He himself explicitly asserted the necessity of faith and baptism (cf. Mk. 16:16; Jn. 3:5), and thereby affirmed at the same time the necessity of the Church which men enter through baptism as through a door. Hence they could not be saved who, knowing that the Catholic Church was founded as necessary by God through Christ, would refuse either to enter it, or to remain in it.
Fully incorporated into the Church are those who, possessing the Spirit of Christ, accept all the means of salvation given to the Church together with her entire organization, and who--by the bonds constituted by the profession of faith, the sacraments, ecclesiastical government, and communion--are joined in the visible structure of the Church of Christ, who rules her through the Supreme Pontiff and the bishops. Even though incorporated into the Church, one who does not however persevere in charity is not saved. He remains indeed in the bosom of the Church, but "in body" not "in heart.''[12] All children of the Church should nevertheless remember that their exalted condition results, not from their own merits, but from the grace of Christ. If they fail to respond in thought, word and deed to that grace, not only shall they not be saved, but they shall be the more severely judged.[13]
Catechumens who, moved by the Holy Spirit, desire with an explicit intention to be incorporated into the Church, are by that very intention joined to her. With love and solicitude mother Church already embraces them as her own.
15. The Church knows that she is joined in many ways to the baptized who are honored by the name of Christian, but who do not however profess the Catholic faith in its entirety or have not preserved unity or communion under the successor of Peter.[14] For there are many who hold sacred scripture in honor as a rule of faith and of life, who have a sincere religious zeal, who lovingly believe in God the Father Almighty and in Christ, the Son of God and the Saviour,[15] who are sealed by baptism which unites them to Christ, and who indeed recognize and receive other sacraments in their own Churches or ecclesiastical communities. Many of them possess the episcopate, celebrate the holy Eucharist and cultivate devotion of the Virgin Mother of God.