6 What means this then your senseless exultation, O you that held me captive, for that my Deliverer had mortal Flesh? See, if He had sin; if you have found anything of yours in Him, hold Him fast. “The Word was made Flesh.” The Word is the Creator, the Flesh His creature. What is there here of yours, O enemy? And the Word is God, and His Human Soul is His creature, and His Human Flesh His creature, and the Mortal Flesh of God is His creature. Seek for sin here. But what are you seeking?
The Truth says, “The prince of this world shall come, and shall find nothing in Me.” He did not therefore not find Flesh, but nothing of his own, that is, no sin. You deceived the innocent, you made them guilty. You slew the Innocent; you destroyed Him from whom you had nothing due, render back what you held fast. Why then did you exult for a short hour, because you found in Christ mortal Flesh? It was your trap: whereupon you rejoiced, thereby have you been taken. Wherein you exulted that you had found something, therein you sorrow now that you have lost what you possessed.
Therefore, brethren, let us who believe in Christ, continue in His word. For if we shall continue in His word, we are His disciples indeed. For not those twelve only, but all we who continue in His word are His disciples indeed. And “we shall know the Truth, and the Truth shall free us;” that is, Christ the Son of God who has said, “I am the Truth,” shall make you free, that is, shall free you, not from barbarians, but from the devil; not from the captivity of the body, but from the iniquity of the soul. It is He Only who frees in such wise. Let no one call himself free, lest he remain a slave. Our soul shall not remain in bondage, for that day by day our debts are forgiven.
Source: Sermons on Selected Lessons of the New Testament (New Advent)