Continuation of the Holy Gospel According to Matthew
At that time, Jesus said to His disciples, All power is given to Me in heaven and on earth. Go therefore, teach ye all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all things whatsoever I have commanded you. And behold I am with you all days, even to the consummation of the world.
A Message From the Congregation for the Doctrine of the Faith‘s Dominus Iesus.
One can and must say that Jesus Christ has a significance and a value for the human race and its history, which are unique and singular, proper to him alone, exclusive, universal, and absolute.
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The Lord Jesus, the only Saviour, did not only establish a simple community of disciples, but constituted the Church as a salvific mystery: he himself is in the Church and the Church is in him (cf. John 15:1-ff.; Gal 3:28; Eph 4:15-16; Acts 9:5).
Therefore, the fullness of Christ’s salvific mystery belongs also to the Church, inseparably united to her Lord. Indeed, Jesus Christ continues his presence and his work of salvation in the Church and by means of the Church (cf. Col 1:24-27),47 which is his body (cf. 1 Cor 12:12-13,27; Col 1:18).48 And thus, just as the head and members of a living body, though not identical, are inseparable, so too Christ and the Church can neither be confused nor separated, and constitute a single “whole Christ”.49 This same inseparability is also expressed in the New Testament by the analogy of the Church as the Bride of Christ (cf. 2 Cor 11:2; Eph 5:25-29; Rev 21:2,9).50
Therefore, in connection with the unicity and universality of the salvific mediation of Jesus Christ, the unicity of the Church founded by him must be firmly believed as a truth of Catholic faith. Just as there is one Christ, so there exists a single body of Christ, a single Bride of Christ: “a single Catholic and apostolic Church”.51 Furthermore, the promises of the Lord that he would not abandon his Church (cf. Matt 16:18; 28:20) and that he would guide her by his Spirit (cf. John 16:13) mean, according to Catholic faith, that the unicity and the unity of the Church — like everything that belongs to the Church’s integrity — will never be lacking.52
The Catholic faithful are required to profess that there is an historical continuity — rooted in the apostolic succession53 — between the Church founded by Christ and the Catholic Church: “This is the single Church of Christ… which our Saviour, after his resurrection, entrusted to Peter’s pastoral care (cf. John 21:17), commissioning him and the other Apostles to extend and rule her (cf. Matt 28:18-ff.), erected for all ages as ‘the pillar and mainstay of the truth’ (1 Tim 3:15). This Church, constituted and organized as a society in the present world, subsists in [subsistit in] the Catholic Church, governed by the Successor of Peter and by the Bishops in communion with him”.54
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With the coming of the Saviour Jesus Christ, God has willed that the Church founded by him be the instrument for the salvation of all humanity (cf. Acts 17:30-31).90 This truth of faith does not lessen the sincere respect which the Church has for the religions of the world, but at the same time, it rules out, in a radical way, that mentality of indifferentism “characterized by a religious relativism which leads to the belief that ‘one religion is as good as another'”.91 If it is true that the followers of other religions can receive divine grace, it is also certain that objectively speaking they are in a gravely deficient situation in comparison with those who, in the Church, have the fullness of the means of salvation.92 However, “all the 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 more severely judged”.93 One understands then that, following the Lord’s command (cf. Mt 28,19-20) and as a requirement of her love for all people, the Church “proclaims and is in duty bound to proclaim without fail, Christ who is the way, the truth, and the life (John 14:6). In him, in whom God reconciled all things to himself (cf. 2 Cor 5:18-19), men find the fullness of their religious life”.94
In inter-religious dialogue as well, the mission ad gentes “today as always retains its full force and necessity”.95 Indeed, God “desires all men to be saved and come to the knowledge of the truth” (1 Tim 2:4); that is, God wills the salvation of everyone through the knowledge of the truth. Salvation is found in the truth. Those who obey the promptings of the Spirit of truth are already on the way of salvation. But the Church, to whom this truth has been entrusted, must go out to meet their desire, so as to bring them the truth. Because she believes in God’s universal plan of salvation, the Church must be missionary”.96 … Indeed, the Church, guided by charity and respect for freedom,98 must be primarily committed to proclaiming to all people the truth definitively revealed by the Lord, and to announcing the necessity of conversion to Jesus Christ and of adherence to the Church through Baptism and the other sacraments, in order to participate fully in communion with God, the Father, Son and Holy Spirit.
(47) Cf. Second Vatican Council, Dogmatic Constitution Lumen gentium, 14.
(48) Cf. ibid., 7.
(49) Cf. St. Augustine, Enarratio in Psalmos, Ps. 90, Sermo 2,1: CCSL 39, 1266; St. Gregory the Great, Moralia in Iob, Praefatio, 6, 14: PL 75, 525; St. Thomas Aquinas, Summa Theologiae, III, q. 48, a. 2 ad 1.
(50) Cf. Second Vatican Council, Dogmatic Constitution Lumen gentium, 6.
(51) Symbolum maius Ecclesiae Armeniacae: DS 48. Cf. Boniface VIII, Unam sanctam: DS 870-872; Second Vatican Council, Dogmatic Constitution Lumen gentium, 8.
(52) Cf. Second Vatican Council, Decree Unitatis redintegratio, 4; John Paul II, Encyclical Letter Ut unum sint, 11: AAS 87 (1995), 927.
(53) Cf. Second Vatican Council, Dogmatic Constitution Lumen gentium, 20; cf. also St. Irenaeus, Adversus haereses, III, 3, 1-3: SC 211, 20-44; St. Cyprian, Epist. 33, 1: CCSL 3B, 164-165; St. Augustine, Contra adver. legis et prophet., 1, 20, 39: CCSL 49, 70.
(54) Second Vatican Council, Dogmatic Constitution Lumen gentium, 8.
(90) Cf. Second Vatican Council, Dogmatic Constitution Lumen gentium, 17; John Paul II, Encyclical Letter Redemptoris missio, 11.
(91) John Paul II, Encyclical Letter Redemptoris missio, 36.
(92) Cf. Pius XII, Encyclical Letter Mystici corporis: DS 3821.
(93) Second Vatican Council, Dogmatic Constitution Lumen gentium, 14.
(94) Second Vatican Council, Declaration Nostra aetate, 2.
(95) Second Vatican Council, Decree Ad gentes, 7.
(96) Catechism of the Catholic Church, 851; cf. also 849-856.
(98) Cf. Second Vatican Council, Declaration Dignitatis humanae, 1.