90 However, leaving aside this aspect of the matter, We want to stress once more the very important place that preaching still has, especially in the modern Catholic apostolate and in connection with the dialogue which is Our present concern. No other form of communication can take its place; not even the exceptionally powerful and effective means provided by modern technology: the press, radio and television. In effect, the apostolate and sacred preaching are more or less synonymous terms. Preaching is the primary apostolate. Our ministry, Venerable Brethren, is before all else the ministry of the Word. We are well aware of this, but it is good to remind ourselves of it at the present time so as to give the right orientation to our pastoral activities. We must return to the study, not of human eloquence of empty rhetoric, but of the genunine are of proclaiming the Word of God.
Source: Ecclesiam Suam (Vatican.va)