2. _Of carnal life, which is to be understood not only of living in bodily indulgence, but also of living in the vices of the inner man._

First, we must see what it is to live after the flesh, and what to live after the spirit. For any one who either does not recollect, or does not sufficiently weigh, the language of sacred Scripture, may, on first hearing what we have said, suppose that the Epicurean philosophers live after the flesh, because they place man's highest good in bodily pleasure; and that those others do so who have been of opinion that in some form or other bodily good is man's supreme good; and that the mass of men do so who, without dogmatizing or philosophizing on the subject, are so prone to lust that they cannot delight in any pleasure save such as they receive from bodily sensations: and he may suppose that the Stoics, who place the supreme good of men in the soul, live after the spirit; for what is man's soul, if not spirit? But in the sense of the divine Scripture both are proved to live after the flesh. For by flesh it means not only the body of a terrestrial and mortal animal, as when it says, "All flesh is not the same flesh, but there is one kind of flesh of men, another flesh of beasts, another of fishes, another of birds,"[2] but it uses this word in many other significations; and among these various usages, a frequent one is to use flesh for man himself, the nature of man taking the part for the whole, as in the words, "By the deeds of the law there shall no flesh be justified;"[3] for what does he mean here by "no flesh" but "no man?" And this, indeed, he shortly after says more plainly: "No man shall be justified by the law;"[4] and in the Epistle to the Galatians, "Knowing that a man is not justified by the works of the law." And so we understand the words, "And the Word was made flesh,"[5]--that is, man, which some not accepting in its right sense, have supposed that Christ had not a human soul.[6] For as the whole is used for the part in the words of Mary Magdalene in the Gospel, "They have taken away my Lord, and I know not where they have laid Him,"[7] by which she meant only the flesh of Christ, which she supposed had been taken from the tomb where it had been buried, so the part is used for the whole, flesh being named, while man is referred to, as in the quotations above cited.

The City of God, Volume II — Part 3