But, they assert, nobody can be at once capable of suffering pain, and incapable of death. It must be that one live in pain, but it need not be that pain kill him; for not even these mortal bodies die from every pain; but the reason that some pain causes their death is, that the connection between the soul and our present body is such that it gives way to extreme pain. But then the soul shall be united to such a body, and in such a way, that no pain shall be able to overcome the connection. There will not then be no death, but an everlasting death, the soul being unable to live, as being without God, and equally unable to rid itself of the pains of body by dying. Among these impugners of the eternity of punishment, Origen is the most merciful, who believed that the Devil himself and his Angels, after sufferings proportioned to their deserts, and a long endurance, should be delivered from those torments, and associated with the holy Angels.
But for these and other things he was not undeservedly rebuked by the Church, because even his seeming mercy was thrown away, making for the saints real pains in which their sins were to be expiated, and fictitious blessedness, if the joys of the good were not to be secure and endless.
In quite another way does the mercy of others err through their humane sympathies, who think that the sufferings of those men who are condemned by this sentence will be temporal, but that the happiness of those who are set free sooner or later will be eternal. Why does their charity extend to the whole race of man, but dries up when they come to the angelic race?
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: City of God, book xxi, ch. 3