From Pope St. John Paul II’s encyclical Fides et Ratio (1984):
Because of its implications for both philosophy and theology, the question of the relationship with cultures calls for particular attention, which cannot however claim to be exhaustive. From the time the Gospel was first preached, the Church has known the process of encounter and engagement with cultures. Christ’s mandate to his disciples to go out everywhere, “even to the ends of the earth” (Acts 1:8), in order to pass on the truth which he had revealed, led the Christian community to recognize from the first the universality of its message and the difficulties created by cultural differences. A passage of Saint Paul’s letter to the Christians of Ephesus helps us to understand how the early community responded to the problem. The Apostle writes: “Now in Christ Jesus you who once were far off have been brought near in the blood of Christ. For he is our peace, who has made us both one, and has broken down the wall of hostility” (2:13-14).
In the light of this text, we reflect further to see how the Gentiles were transformed once they had embraced the faith. With the richness of the salvation wrought by Christ, the walls separating the different cultures collapsed. God’s promise in Christ now became a universal offer: no longer limited to one particular people, its language and its customs, but extended to all as a heritage from which each might freely draw. From their different locations and traditions all are called in Christ to share in the unity of the family of God’s children. It is Christ who enables the two peoples to become “one”. Those who were “far off” have come “near”, thanks to the newness brought by the Paschal Mystery. Jesus destroys the walls of division and creates unity in a new and unsurpassed way through our sharing in his mystery. This unity is so deep that the Church can say with Saint Paul: “You are no longer strangers and sojourners, but you are saints and members of the household of God” (Eph 2:19).
This simple statement contains a great truth: faith’s encounter with different cultures has created something new. When they are deeply rooted in experience, cultures show forth the human being’s characteristic openness to the universal and the transcendent. Therefore they offer different paths to the truth, which assuredly serve men and women well in revealing values which can make their life ever more human.94 Insofar as cultures appeal to the values of older traditions, they point—implicitly but authentically—to the manifestation of God in nature, as we saw earlier in considering the Wisdom literature and the teaching of Saint Paul.
94 Cf. Second Vatican Ecumenical Council, Pastoral Constitution on the Church in the Modern World Gaudium et Spes, 53-59.
— Fides et Ratio 70