The thesis which denies the salvific universality of the mystery of Jesus Christ has no biblical foundation. In fact, the truth of Jesus Christ, Son of God, Lord and only Savior, who through the event of his incarnation, death and resurrection has brought the history of salvation to fulfillment, and which has in him its fullness and centre, must be firmly believed as a constant element of the Church's faith.
The New Testament attests to this fact with clarity: "Behold the Lamb of God who takes away the sin of the world" (Jn 1:29).
In his discourse before the Sanhedrin, Peter, in order to justify the healing of a man who was crippled from birth, which was done in the name of Jesus (cf. Acts 3:1-8), proclaims: "There is salvation in no one else, for there is no other name under heaven given among men by which we must be saved" (Acts 4:12).
St. Paul adds, moreover, that Jesus Christ "is Lord of all", "judge of the living and the dead", and thus "whoever believes in him receives forgiveness of sins through his name" (Acts 10: 36,42,43).
Paul, addressing himself to the community of Corinth, writes: "Indeed, even though there may be so-called gods in heaven or on earthóas in fact there are many gods and many lordsóyet for us there is one God, the Father, from whom are all things and for whom we exist, and one Lord, Jesus Christ, through whom are all things and through whom we exist" (1 Cor 8:5-6).
Furthermore, John the Apostle states: "For God so loved the world that he gave his only Son, so that everyone who believes in him may not perish but may have eternal life. God did not send his Son into the world to condemn the world, but in order that the world might be saved through him" (Jn 3:16-17).
In the New Testament, the universal salvific will of God is closely connected to the sole mediation of Christ: "[God] desires all men to be saved and to come to the knowledge of the truth. For there is one God; there is also one mediator between God and men, the man Jesus Christ, who gave himself as a ransom for all" (1 Tim 2:4-6).
It was in the awareness of the one universal gift of salvation offered by the Father through Jesus Christ in the Spirit (cf. Eph 1:3-14), that the first Christians encountered the Jewish people, showing them the fulfillment of salvation that went beyond the Law and, in the same awareness, they confronted the pagan world of their time, which aspired to salvation through a plurality of saviors. This inheritance of faith has been recalled recently by the Church's Magisterium: "The Church believes that Christ, who died and was raised for the sake of all (cf. 2 Cor 5:15) can, through his Spirit, give man the light and the strength to be able to respond to his highest calling, nor is there any other name under heaven given among men by which they can be saved (cf. Acts 4:12). The Church believes that the key, the centre, and the purpose of the whole of man's history is to be found in its Lord and Master".