Forming Local Churches

48. Conversion and Baptism give entry into a Church already in existence or require the establishment of new communities which confess Jesus as Savior and Lord. This is part of God's plan, for it pleases him "to call human beings to share in his own life not merely as individuals, without any unifying bond between them, but rather to make them into a people in which his children, who had been widely scattered, might be gathered together in unity."⁷⁸

The mission ad gentes has this objective: to found Christian communities and develop churches to their full maturity. This is a central and determining goal of missionary activity, so much so that the mission is not completed until it succeeds in building a new particular church which functions normally in its local setting The Decree Ad Gentes deals with this subject at length,⁷⁹ and since the Council, a line of theological reflection has developed which emphasizes that the whole mystery of the Church is contained in each particular church, provided it does not isolate itself but remains in communion with the universal Church and becomes missionary in its own turn. Here we are speaking of a great and lengthy process, in which it is hard to identify the precise stage at which missionary activity properly so-called comes to an end and is replaced by pastoral activity. Even so, certain points must remain clear.

49. It is necessary first and foremost to strive to establish Christian communities everywhere, communities which are "a sign of the presence of God in the world"⁸⁰ and which grow until they become churches. Notwithstanding the high number of dioceses, there are still very large areas where there are no local churches or where their number is insufficient in relation to the vastness of the territory and the density of the population. There is still much to be done in implanting and developing the Church. This phase of ecclesial history, called the plantatio Ecclesiae, has not reached its end; indeed, for much of the human race it has yet to begin.

Responsibility for this task belongs to the universal Church and to the particular churches, to the whole people of God and to all its missionary forces. Every church, even one made up of recent converts, is missionary by its very nature, and is both evangelized and evangelizing. Faith must always be presented as a gift of God to be lived out in community (families, parishes, associations), and to be extended to others through witness in word and deed. The evangelizing activity of the Christian community, first in its own locality, and then elsewhere as part of the Church's universal mission, is the clearest sign of a mature faith. A radical conversion in thinking is required in order to become missionary, and this holds true both for individuals and entire communities. The Lord is always calling us to come out of ourselves and to share with others the goods we possess, starting with the most precious gift of all - our faith. The effectiveness of the Church's organizations, movements, parishes and apostolic works must be measured in the light of this missionary imperative. Only by becoming missionary will the Christian community be able to overcome its internal divisions and tensions, and rediscover its unity and its strength of faith.

Missionary personnel coming from other churches and countries must work in communion with their local counterparts for the development of the Christian community. In particular, it falls to missionary personnel - in accordance with the directives of the bishops and in cooperation with those responsible at the local level - to foster the spread of the faith and the expansion of the Church in non-Christian environments and among non-Christian groups, and to encourage a missionary sense within the particular churches, so that pastoral concern will always be combined with concern for the mission ad gentes. In this way, every church will make its own the solicitude of Christ the Good Shepherd, who fully devotes himself to his flock, but at the same time is mindful of the "other sheep, that are not of this fold." (Jn 10:16)

50. This solicitude will serve as a motivation and stimulus for a renewed commitment to ecumenism. The relationship between ecumenical activity and missionary activity makes it necessary to consider two closely associated factors. On the one hand, we must recognize that "the division among Christians damages the holy work of preaching the Gospel to every creature and is a barrier for many in their approach to the faith."⁸¹ The fact that the Good News of reconciliation is preached by Christians who are divided among themselves weakens their witness. It is thus urgent to work for the unity of Christians, so that missionary activity can be more effective. At the same time we must not forget that efforts toward unity are themselves a sign of the work of reconciliation which God is bringing about in our midst.

On the other hand, it is true that some kind of communion, though imperfect, exists among all those who have received Baptism in Christ. On this basis the Council established the principle that "while all appearance of indifferentism and confusion is ruled out, as well as any appearance of unhealthy rivalry, Catholics should collaborate in a spirit of fellowship with their separated brothers and sisters in accordance with the norms of the Decree on Ecumenism: by a common profession of faith in God and in Jesus Christ before the nations - to the extent that this is possible - and by their cooperation in social and technical as well as in cultural and religious matters."⁸²

Ecumenical activity and harmonious witness to Jesus Christ by Christians who belong to different churches and ecclesial communities has already borne abundant fruit. But it is ever more urgent that they work and bear witness together at this time when Christian and para-Christian sects are sowing confusion by their activity. The expansion of these sects represents a threat for the Catholic Church and for all the ecclesial communities with which she is engaged in dialogue. Wherever possible, and in the light of local circumstances, the response of Christians can itself be an ecumenical one.