13 The bishops should present Christian doctrine in a manner adapted to the needs of the times, that is to say, in a manner that will respond to the difficulties and questions by which people are especially burdened and troubled. They should also guard that doctrine, teaching the faithful to defend and propagate it. In propounding this doctrine they should manifest the maternal solicitude of the Church toward all men whether they be believers or not. With a special affection they should attend upon the poor and the lower classes to whom the Lord sent them to preach the Gospel. Since it is the mission of the Church to converse with the human society in which it lives, it is especially the duty of bishops to seek out men and both request and promote dialogue with them. These conversations on salvation ought to be noted for clarity of speech as well as humility and mildness in order that at all times truth may be joined to charity and understanding with love. Likewise they should be noted for due prudence joined with trust, which fosters friendship and thus is capable of bringing about a union of minds. They should also strive to make use of the various media at hand nowadays for proclaiming Christian doctrine, namely, first of all, preaching and catechetical instruction which always hold the first place, then the presentation of this doctrine in schools, academies, conferences, and meetings of every kind, and finally its dissemination through public statements at times of outstanding events as well as by the press and various other media of communication, which by all means ought to be used in proclaiming the Gospel of Christ.
Source: Christus Dominus (Vatican.va)