16 Joyfully the Church gives thanks for the priceless gift of the priestly calling which God has granted to so many youths among those nations but recently converted to Christ. For the Church drives deeper roots in any given sector of the human family when the various faithful communities all have, from among their members, their own ministers of salvation in the order of bishops, priests, and deacons, serving their own brethren, so that the young churches gradually acquire a diocesan structure with their own clergy. What this council has decreed concerning priestly vocations and formation, should be religiously observed where the Church is first planted, and among the young churches. Of great importance are the things which are said about closely joining spiritual formation with the doctrinal and pastoral; about living a life patterned after the Gospel without looking out for ones own comfort or that of one's family; about cultivating a deep appreciation of the mystery of the Church. From all this, they will be well taught to dedicate themselves wholly to the service of the Body of Christ and to the work of the Gospel, to cleave to their own bishop as his faithful co - workers, and to cooperate with their colleagues. To attain this general end, the whole training of the students should be planned in the light of the mystery of salvation as it is revealed in the Scriptures. This mystery of Christ and of man's salvation they can discover and live in the liturgy. These common requirements of priestly training, including the pastoral and practical ones prescribed by the council should be combined with an attempt to make contact with their own particular national way of thinking and acting. Therefore, let the minds of the students be kept open and attuned to an acquaintance and an appreciation of their own nation's culture. In their philosophical and theological studies, let them consider the points of contact which mediate between the traditions and religion of their homeland on the one hand and the Christian religion on the other. Likewise, priestly training should have an eye to the pastoral needs of that region; and the students should learn the history, aim, and method of the Church's missionary activity, and the special social, economic, and cultural conditions of their own people. Let them be educated in the ecumenical spirit, and duly prepared for fraternal dialogue with non - Christians. All this demands that studies for the priesthood be undertaken, so far as possible, in association and living together with their own people. Finally, let care be taken that students are trained in ordinary ecclesiastical and financial administration. Moreover, suitable priests should be chosen, after a little pastoral practice, to pursue higher studies in universities, even abroad and especially in Rome as well as in other institutes of learning. In this way the young churches will have at hand men from among the local clergy equipped with the learning and skill needed for discharging more difficult ecclesiastical duties. Where episcopal conferences deem it opportune, the order of the diaconate should be restored as a permanent state of life according to the norms of the Constitution "De Ecclesia." For there are men who actually carry out the functions of the deacon's office, either preaching the word of God as catechists, or presiding over scattered Christian communities in the name of the pastor and the bishop, or practicing charity in social or relief work. It is only right to strengthen them by the imposition of hands which has come down from the Apostles, and to bind them more closely to the altar, that they may carry out their ministry more effectively because of the sacramental grace of the diaconate.
Source: Ad Gentes (Vatican.va)