Pope John Paul II
Redemptoris Missio §64
Redemptoris Missio: On the Permanent Validity of the Church's Missionary Mandate
64 Each particular church must be generous and open to the needs of the other churches. Cooperation between the churches, in an authentic reciprocity that prepares them both to give and to receive, is a source of enrichment for all of them and touches the various spheres of ecclesial life. In this respect, the declaration of the bishops at Puebla is exemplary: "The hour has finally come for Latin America...to be projected beyond her frontiers, ad gentes . Certainly we have need of missionaries ourselves, nevertheless we must give from our own poverty." In the same spirit, I exhort bishops and Episcopal Conferences to act generously in implementing the provisions of the norms which the Congregation for the Clergy issued regarding cooperation between particular churches and especially regarding the better distribution of clergy in the world. The Church's mission is wider than the "communion among the churches"; it ought to be directed not only to aiding re-evangelization but also and primarily to missionary activity as such. I appeal to all the churches, young and old alike, to share in this concern of mine by seeking to overcome the various obstacles and increase missionary vocations.
Source: Redemptoris Missio (Vatican.va)