Clement of Alexandria

Expressly then respecting all our Scripture, as if spoken in a parable, it is written in the Psalms, "Hear, O My people, My law: incline your ear to the words of My mouth. I will open My mouth in parables, I will utter My problems from the beginning." Similarly speaks the noble apostle to the following effect: "Howbeit we speak wisdom among those that are perfect; yet not the wisdom of this world, nor of the princes of this world, that come to nought. But we speak the wisdom of God hidden in a mystery; which none of the princes of this world knew. For had they known it, they would not have crucified the Lord of glory."

Akin to this is what the holy Apostle Paul says, preserving the prophetic and truly ancient secret from which the teachings that were good were derived by the Greeks: "Howbeit we speak wisdom among them who are perfect; but not the wisdom of this world, or of the princes of this world, that come to nought; but we speak the wisdom of God hidden in a mystery." Then proceeding, he thus inculcates the caution against the divulging of his words to the multitude...

And was it not this which the prophet meant, when he ordered unleavened cakes to be made, intimating that the truly sacred mystic word, respecting the unbegotten and His powers, ought to be concealed? In confirmation of these things, in the Epistle to the Corinthians the apostle plainly says: "Howbeit we speak wisdom among those who are perfect, but not the wisdom of this world, or of the princes of this world, that come to nought. But we speak the wisdom of God hidden in a mystery." And again in another place he says: "To the acknowledgment of the mystery of God in Christ, in whom are hid all the treasures of wisdom and knowledge." These things the Saviour Himself seals when He says: "To you it is given to know the mysteries of the kingdom of heaven." And again the Gospel says that the Saviour spake to the apostles the word in a mystery. For prophecy says of Him: "He will open His mouth in parables, and will utter things kept secret from the foundation of the world."