Redemptoris Missio §85

⁸⁵ Cooperating in missionary activity means not just giving but also receiving. All the particular churches, both young and old, are called to give and to receive in the context of the universal mission, and none should be closed to the needs of others. The Council states: "By virtue of...catholicity, the individual parts bring their own gifts to the other parts and to the whole Church, in such a way that the whole and individual parts grow greater through the mutual communication of all and their united efforts toward fullness in unity.... Between the different parts of the Church there are bonds of intimate communion with regard to spiritual riches, apostolic workers and temporal assistance." I exhort all the churches, and the bishops, priests, religious and members of the laity, to be open to the Church's universality , and to avoid every form of provincialism or exclusiveness, or feelings of self-sufficiency. Local churches, although rooted in their own people and their own culture, must always maintain an effective sense of the universality of the faith, giving and receiving spiritual gifts, experiences of pastoral work in evangelization and initial proclamation, as well as personnel for the apostolate and material resources. The temptation to become isolated can be a strong one. The older churches, involved in new evangelization, may think that their mission is now at home, and thus they may risk slackening their drive toward the non-Christian world, begrudgingly conceding vocations to missionary institutes, religious congregations or other particular churches. But it is by giving generously of what we have that we will receive. Already the young churches, many of which are blessed with an abundance of vocations, are in a position to send priests and men and women religious to the older churches. On the other hand, the young churches are concerned about their own identity, about inculturation, and about their freedom to grow independently of external influences, with the possible result that they close their doors to missionaries. To these churches I say: Do not isolate yourselves; willingly accept missionaries and support from other churches, and do likewise throughout the world. Precisely because of the problems that concern you, you need to be in continuous contact with your brothers and sisters in the faith. With every legitimate means, seek to ensure recognition of the freedom to which you have a right, remembering that Christ's disciples must "obey God rather than men" (Acts 5:29).