Chromatius of Aquileia : Concerning the light Daniel noted, "It reveals the profound and hidden things, knowing those things that are in the darkness and the light is with it," that is, the Son with the Father, for even as the Father is light, so too is the Son light. And David also speaks in the psalm: "In your light shall we see light," for the Father is seen in the Son, as the Lord tells us in the Gospel: "Who sees me, sees the Father." From the true light, indeed, the true light proceeded, and from the invisible the visible. — TRACTATE ON Matthew 15:1 Jerome : Verse 22. "It is He who reveals deep and hidden things, and He knows what is placed in the darkness, and with Him is the light." A man to whom God makes profound revelations and who can say, "O the depth of the riches of the knowledge and wisdom of God!" (Romans 11:33), he it is who by the indwelling Spirit probes even into the deep things of God, and digs the deepest of wells in the depths of his soul. He is a man who has stirred up the whole earth, which is wont to conceal the deep waters, and he observes the command of God, saying: "Drink water from thy vessels and from the spring of thy wells" (Proverbs 5:15). As for the words which follow, "He knows what is placed in the darkness, and with Him is the light," the darkness signifies ignorance, and the light signifies knowledge and learning. Therefore as wrong cannot hide God away, so right encompasses and surrounds Him. Or else we should interpret the words to mean all the dark mysteries and deep things (concerning God), according to what we read in Proverbs: "He understands also the parable and the dark saying." (Proverbs 1:6, LXX) This in turn is equivalent to what we read in the Psalms: "Dark waters in the clouds of the sky" (Psalms 18:11). For one who ascends to the heights and forsakes the things of earth, and like the birds themselves seeks after the most rarified atmosphere and everything ethereal, he becomes like a cloud to which the truth of God penetrates and which habitually showers rain upon the saints. Replete with a plenitude of knowledge, he contains in his breast many dark waters enveloped with deep darkness, a darkness which only Moses can penetrate and speak with God face to face (Exodus 33:11), of Whom the Scripture says: "He hath made darkness His hiding-place" (Psalms 18:11). — St. Jerome, Commentary on Daniel, CHAPTER TWO Theodoret of Cyrus : Such is the life of the devout, acknowledging that God is the source of understanding. He was the One who met Daniel's needs at the right moment and assured him a safe harbor. And after being well supplied with that which was the best, Daniel did not prove forgetful of the gifts but sang praises in response to his holy benefactor. — COMMENTARY ON Daniel 2:23