Nicene and Post-Nicene Fathers, Vol. II:
City of God: Chapter 10

Chapter 10.—Whether the Fire of Hell, If It Be Material Fire, Can Burn the Wicked Spirits, that is to Say, Devils, Who are Immaterial.

Here arises the question:  If the fire is not to be immaterial, analogous to the pain of the soul, but material, burning by contact, so that bodies may be tormented in it, how can evil spirits be punished in it?  For it is undoubtedly the same fire which is to serve for the punishment of men and of devils, according to the words of Christ:  “Depart from me, ye cursed, into everlasting fire, prepared for the devil and his angels;” 1512 unless, perhaps, as learned men have thought, the devils have a kind of body made of that dense and humid air which we feel strikes us when the p. 462 wind is blowing.  And if this kind of substance could not be affected by fire, it could not burn when heated in the baths.  For in order to burn, it is first burned, and affects other things as itself is affected.  But if any one maintains that the devils have no bodies, this is not a matter either to be laboriously investigated, or to be debated with keenness.  For why may we not assert that even immaterial spirits may, in some extraordinary way, yet really be pained by the punishment of material fire, if the spirits of men, which also are certainly immaterial, are both now contained in material members of the body, and in the world to come shall be indissolubly united to their own bodies?  Therefore, though the devils have no bodies, yet their spirits, that is, the devils themselves, shall be brought into thorough contact with the material fires, to be tormented by them; not that the fires themselves with which they are brought into contact shall be animated by their connection with these spirits, and become animals composed of body and spirit, but, as I said, this junction will be effected in a wonderful and ineffable way, so that they shall receive pain from the fires, but give no life to them.  And, in truth, this other mode of union, by which bodies and spirits are bound together and become animals, is thoroughly marvellous, and beyond the comprehension of man, though this it is which is man.

I would indeed say that these spirits will burn without any body of their own, as that rich man was burning in hell when he exclaimed, “I am tormented in this flame,” 1513 were I not aware that it is aptly said in reply, that that flame was of the same nature as the eyes he raised and fixed on Lazarus, as the tongue on which he entreated that a little cooling water might be dropped, or as the finger of Lazarus, with which he asked that this might be done,—all of which took place where souls exist without bodies.  Thus, therefore, both that flame in which he burned and that drop he begged were immaterial, and resembled the visions of sleepers or persons in an ecstasy, to whom immaterial objects appear in a bodily form.  For the man himself who is in such a state, though it be in spirit only, not in body, yet sees himself so like to his own body that he cannot discern any difference whatever.  But that hell, which also is called a lake of fire and brimstone, 1514 will be material fire, and will torment the bodies of the damned, whether men or devils,—the solid bodies of the one, aerial bodies of the others; or if only men have bodies as well as souls, yet the evil spirits, though without bodies, shall be so connected with the bodily fires as to receive pain without imparting life.  One fire certainly shall be the lot of both, for thus the truth has declared.

Footnotes

Matt. 25.41.

Luke 16.24.

Rev. 20.10.