Jerome : Verse 17. "But God gave these lads knowledge and learning in every book and branch of wisdom, and He gave to Daniel besides an understanding of all visions and dreams." Note that God is said to have given the holy lads knowledge and learning in secular literature, in every book and branch of wisdom. Symmachus rendered this by "grammatical art," implying that they understood everything they read, and by the Spirit of God could make a judgment concerning the lore of the Chaldeans. But Daniel had an outstanding gift over and above the three lads, in that he could astutely discern the significance of visions and dreams in which things to come are shown forth by means of certain symbols and mysteries. Therefore that which others saw only in a shadowy appearance he could perceive clearly with the eyes of his understanding. — St. Jerome, Commentary on Daniel, CHAPTER ONE Origen of Alexandria : In regard to the prophets among the Jews, some of them were wise men before they became divinely inspired prophets, while others became wise by the illumination that their minds received when divinely inspired. They were selected by divine providence to receive the divine Spirit and to be the depositaries of his holy oracles, on the ground of their leading a life of almost unapproachable excellence, intrepid, noble, unmoved by danger or death. — AGAINST CELSUS 7:7