These words are the Word of God
by Origen, c. 185-254

The Scriptures that prophesy about Christ, the words that announce his coming and his teaching are inspired by God.  They were proclaimed with power and authority and it is for this reason they have conquered so many people's hearts.

However, only with the coming of Christ have the divine character of the prophetic writings and the spiritual meaning of the books of the Mosaic Law become apparent.  Before Christ it was not possible t produce decisive arguments for the inspiration of the Old Testament.  The coming of Jesus persuaded even the doubtful that those pages were written under the influence of grace.

Whoever reads the Prophets carefully will be convinced that they are no human achievement.  The reader will understand the meaning of divine inspiration.

As far as the books of the Mosaic Law are concerned, a veil has been drawn between their brightness and people's understanding.  The coming of Jesus has made that light shine in such a way that I has become possible to recognize clearly those future benefits at which the literal meaning of those books only hinted. (Cf. 2 Cor. 3:12-18; Heb. 10:1).

It would take a long time to review the ancient prophecies of events that would be realized int he future.  But someone in doubt who did this would be struck by their divine character.  He would give up all his uncertainty and dedicate himself to he Word of God with all his soul.

(Translation by Thomas Spidlik, Drinking from the Hidden Fountain: A Patristic Breviary, Cistercian Publications, Kalamazoo, MI - Spencer, MASS, 1994)