Conditor Antiquae Rursum Fidei

Today is the feast of St. Augustine, Doctor of the Church. (The title of the post is from St. Jerome, Letter 195). From De doctrina christiana, Book I, Chapters 13-14, 16:

In what way did He come but this, "The Word was made flesh, and dwelt among us"? Just as when we speak, in order that what we have in our minds may enter through the ear into the mind of the hearer, the word which we have in our hearts becomes an outward sound and is called speech; and yet our thought does not lose itself in the sound, but remains complete in itself, and takes the form of speech without being modified in its own nature by the change: so the Divine Word, though suffering no change of nature, yet became flesh, that He might dwell among us....

Moreover, as the use of remedies is the way to health, so this remedy took up sinners to heal and restore them. And just as surgeons, when they bind up wounds, do it not in a slovenly way, but carefully, that there may be a certain degree of neatness in the binding, in addition to its mere usefulness, so our medicine, Wisdom, was by His assumption of humanity adapted to our wounds, curing some of them by their opposites, some of them by their likes....

...For the Church is His body, as the apostle's teaching shows us; and it is even called His spouse. His body, then, which has many members, and all performing different functions, He holds together in the bond of unity and love, which is its true health. Moreover He exercises it in the present time, and purges it with many wholesome afflictions, that when He has transplanted it from this world to the eternal world, He may take it to Himself as His bride, without spot or wrinkle, or any such thing.