Mission in the Catholic tradition is an encounter of love between the Christian and non-Christian peoples of the world. Its sole purpose, in the words of John Paul II, is to serve people “by revealing to them the love of God made manifest in Jesus Christ.” For this reason, the Church has a missionary nature and her goal in every age is “to point the awareness and experience of the whole of humanity toward the mystery of Christ.”
For missionary activity to bear fruit in the lives of Christian missionaries and non-Christian people alike, the missionary must—as the Second Vatican Council’s Ad Gentes decree makes clear—gain a “thorough knowledge of the history, social structures, and customs” of diverse people. This means that missionaries must be educated in the “lands to which they are sent” and must form an understanding of “the secret notions” and “sacred tradition” that the people of those lands have formed concerning “God, the world and man” (Ad Gentes).
If newness of life in Christ is a gift that has been given to all Christians, it is no longer the responsibility only of religious orders to immerse themselves in the lives of non-Christian people. As John Paul II reminds us, “missionary activity is a matter for all… dioceses and parishes, Church institutions and associations.”
Since the Church is mission, and we are the Church, all Catholics are encouraged to participate in missionary activities and steep themselves in foreign cultures.