On the Resurrection, and the Judgment, the Fire of Hell, and Punishments
6 There are also many other things which escape our notice, and are known to Him alone who is the physician of our souls. For if, on account of those bad effects which we bring upon ourselves by eating and drinking, we deem it necessary for the health of the body to make use of some unpleasant and painful drug, sometimes even, if the nature of the disease demand, requiring the severe process of the amputating knife; and if the virulence of the disease shall transcend even these remedies, the evil has at last to be burned out by fire; how much more is it to be understood that God our Physician, desiring to remove the defects of our souls, which they had contracted from their different sins and crimes, should employ penal measures of this sort, and should apply even, in addition, the punishment of fire to those who have lost their soundness of mind! Pictures of this method of procedure are found also in the holy Scriptures. In the book of Deuteronomy, the divine word threatens sinners with the punishments of fevers, and colds, and jaundice, and with the pains of feebleness of vision, and alienation of mind and paralysis, and blindness, and weakness of the reins. If any one, then, at his leisure gather together out of the whole of Scripture all the enumerations of diseases which in the threatenings addressed to sinners are called by the names of bodily maladies, he will find that either the vices of souls, or their punishments, are figuratively indicated by them. To understand now, that in the same way in which physicians apply remedies to the sick, in order that by careful treatment they may recover their health, God so deals towards those who have lapsed and fallen into sin, is proved by this, that the cup of God's fury is ordered, through the agency of the prophet Jeremiah, to be offered to all nations, that they may drink it, and be in a state of madness, and vomit it forth. In doing which, He threatens them, saying, That if any one refuse to drink, he shall not be cleansed. By which certainly it is understood that the fury of God's vengeance is profitable for the purgation of souls. That the punishment, also, which is said to be applied by fire, is understood to be applied with the object of healing, is taught by Isaiah, who speaks thus of Israel: “The Lord will wash away the filth of the sons or daughters of Zion, and shall purge away the blood from the midst of them by the spirit of judgment, and the spirit of burning.” Of the Chaldeans he thus speaks: “You have the coals of fire; sit upon them: they will be to you a help.” And in other passages he says, “The Lord will sanctify in a burning fire” and in the prophecies of Malachi he says, “The Lord sitting will blow, and purify, and will pour forth the cleansed sons of Judah.”
7. But that fate also which is mentioned in the Gospels as overtaking unfaithful stewards who, it is said, are to be divided, and a portion of them placed along with unbelievers, as if that portion which is not their own were to be sent elsewhere, undoubtedly indicates some kind of punishment on those whose spirit, as it seems to me, is shown to be separated from the soul. For if this Spirit is of divine nature, i.e., is understood to be a Holy Spirit, we shall understand this to be said of the gift of the Holy Spirit: that when, whether by baptism, or by the grace of the Spirit, the word of wisdom, or the word of knowledge, or of any other gift, has been bestowed upon a man, and not rightly administered, i.e., either buried in the earth or tied up in a napkin, the gift of the Spirit will certainly be withdrawn from his soul, and the other portion which remains, that is, the substance of the soul, will be assigned its place with unbelievers, being divided and separated from that Spirit with whom, by joining itself to the Lord, it ought to have been one spirit. Now, if this is not to be understood of the Spirit of God, but of the nature of the soul itself, that will be called its better part which was made in the image and likeness of God; whereas the other part, that which afterwards, through its fall by the exercise of free-will, was assumed contrary to the nature of its original condition of purity—this part, as being the friend and beloved of matter, is punished with the fate of unbelievers. There is also a third sense in which that separation may be understood, this viz., that as each believer, although the humblest in the Church, is said to be attended by an angel, who is declared by the Saviour always to behold the face of God the Father, and as this angel was certainly one with the object of his guardianship; so, if the latter is rendered unworthy by his want of obedience, the angel of God is said to be taken from him, and then that part of him— the part, viz., which belongs to his human nature— being rent away from the divine part, is assigned a place along with unbelievers, because it has not faithfully observed the admonitions of the angel allotted it by God.
8. But the outer darkness, in my judgment, is to be understood not so much of some dark atmosphere without any light, as of those persons who, being plunged in the darkness of profound ignorance, have been placed beyond the reach of any light of the understanding. We must see, also, lest this perhaps should be the meaning of the expression, that as the saints will receive those bodies in which they have lived in holiness and purity in the habitations of this life, bright and glorious after the resurrection, so the wicked also, who in this life have loved the darkness of error and the night of ignorance, may be clothed with dark and black bodies after the resurrection, that the very mist of ignorance which had in this life taken possession of their minds within them, may appear in the future as the external covering of the body. Similar is the view to be entertained regarding the prison. Let these remarks, which have been made as brief as possible, that the order of our discourse in the meantime might be preserved, suffice for the present occasion.
Source: De Principiis (New Advent)