26 And so too are all they seriously mistaken who, occupying themselves with the welfare of the people, and especially upholding the cause of the lower classes, seek to promote above all else the material well-being of the body and of life, but are utterly silent about their spiritual welfare and the very serious duties which their profession as Christians enjoins upon them. They are not ashamed to conceal sometimes, as though with a veil, certain fundamental maxims of the Gospel, for fear lest otherwise the people refuse to hear and follow them. It will certainly be the part of prudence to proceed gradually in laying down the truth, when one has to do with men completely strangers to us and completely separated from God. "Before using the steel, let the wounds be felt with a light hand," as Gregory said ( Registr . v. 44 (18) ad Joannem episcop.). But even this carefulness would sink to mere prudence of the flesh, were it proposed as the rule of constant and everyday action - all the more since such a method would seem not to hold in due account that Divine Grace which sustains the sacerdotal ministry and which is given not only to those who exercise this ministry, but to all the faithful of Christ in order that our words and our action may find an entrance into their heart. Gregory did not at all understand this prudence, either in the preaching of the Gospel, or in the many wonderful works undertaken by him to relieve misery. He did constantly what the Apostles had done, for they, when they went out for the first time into the world to bring into it the name of Christ, repeated the saying: "We preach Christ crucified, a scandal for the Jews, a folly for the Gentiles" (I Cor. i. 23). If ever there was a time in which human prudence seemed to offer the only expedient for obtaining something in a world altogether unprepared to receive doctrines so new, so repugnant to human passions, so opposed to the civilization, then at its most flourishing period, of the Greeks and the Romans, that time was certainly the epoch of the preaching of the faith. But the Apostles disdained such prudence, because they understood well the precept of God: "It pleased God by the foolishness of our preaching to save them that believe (I Cor . i. 21). And as it ever was, so it is today, this foolishness "to them that are saved, that is, to us, is the power of God" (I Cor . i. 18). The scandal of the Crucified will ever furnish us in the future, as it has done in the past, with the most potent of all weapons; now as of yore in that sign we shall find victory.
Source: Iucunda Sane (Vatican.va)