John 1:14
And what should one say of the fashioning of the soul, so much more admirable than that of the body? The health of our bodies is a great thing, but that of our souls is as much greater as the soul is better than the body. And not on this account only, but because our bodily nature follows withersoever the Creator will lead it, and there is nothing to resist, but the soul being its own mistress, and possessing power over its acts, does not in all things obey God, unless it will to do so. For God will not make it beautiful and excellent, if it be reluctant and in a manner constrained by force, for this is not virtue at all; but He must persuade it to become so of its own will and choice. And so this cure is more difficult than the other; yet even this succeeded, and every kind of wickedness was banished. And as He re-ordered the bodies which He cured, not to health only, but to the highest vigor, so did He not merely deliver the souls from extremist wickedness, but brought them to the very summit of excellence. A publican became an Apostle, and a persecutor, blasphemer, and injurious, appeared as herald to the world, and the Magi became teachers of the Jews, and a thief was declared a citizen of Paradise, and a harlot shone forth by the greatness of her faith, and of the two women, of Canaan and Samaria, the latter who was another harlot, undertook to preach the Gospel to her countrymen, and having enclosed a whole city in her net, so brought them to Christ; while the former by faith and perseverance, procured the expulsion of an evil spirit from her daughter's soul; and many others much worse than these were straightway numbered in the rank of disciples, and at once all the infirmities of their bodies and diseases of their souls were transformed, and they were fashioned anew to health and exactest virtue. And of these, not two or three men, not five, or ten, or twenty, or an hundred only, but entire cities and nations, were very easily remodeled. Why should one speak of the wisdom of the commands, the excellency of the heavenly laws, the good ordering of the angelic polity? For such a life has He proposed to us, such laws appointed for us, such a polity established, that those who put these things into practice, immediately become angels and like to God, as far as is in our power, even though they may have been worse than all men.
3. The Evangelist therefore having brought together all these things, the marvels in our bodies, in our souls, in the elements (of our faith), the commandments, those gifts ineffable and higher than the heavens, the laws, the polity, the persuasion, the future promises, His sufferings, uttered that voice so wonderful and full of exalted doctrine, saying, “We beheld His glory, the glory as of the Only-Begotten of the Father, full of grace and truth.” For we admire Him not only on account of the miracles, but also by reason of the sufferings; as that He was nailed upon the Cross, that He was scourged, that He was buffeted, that He was spit upon, that He received blows on the cheek from those to whom He had done good. For even of those very things which seem to be shameful, it is proper to repeat the same expression, since He Himself called that action “glory.” For what then took place was (proof) not only of kindness and love, but also of unspeakable power. At that time death was abolished, the curse was loosed, devils were shamed and led in triumph and made a show of, and the handwriting of our sins was nailed to the Cross. And then, since these wonders were doing invisibly, others took place visibly, showing that He was of a truth the Only-Begotten Son of God, the Lord of all creation. For while yet that blessed Body hung upon the tree, the sun turned away his rays, the whole earth was troubled and became dark, the graves were opened, the ground quaked, and an innumerable multitude of dead leaped forth, and went into the city. And while the stones of His tomb were fastened upon the vault, and the seals yet upon them, the Dead arose, the Crucified, the nail-pierced One, and having filled His eleven disciples with His mighty power, He sent them to men throughout all the world, to be the common healers of all their kind, to correct their way of living, to spread through every part of the earth the knowledge of their heavenly doctrines, to break down the tyranny of devils, to teach those great and ineffable blessings, to bring to us the glad tidings of the soul's immortality, and the eternal life of the body, and rewards which are beyond conception, and shall never have an end. These things then, and yet more than these, the blessed Evangelist having in mind, things which though he knew, he was not able to write, because the world could not have contained them (for if all things “should be written every one, I suppose that even the world itself could not contain the books that should be written”), reflecting therefore on all these, he cries out, “We beheld His glory, the glory as of the Only-Begotten of the Father, full of grace and truth.”
Source: Homilies on the Gospel of John (New Advent)