Thomas Aquinas

“ Moreover the order of nature requires the dissolution not only of the union of soul and body, but also of the mingling of the elements: even as vinegar cannot be brought back to the quality of wine unless it first be dissolved into the prejacent matter: for the mingling of the elements is both caused and preserved by the movement of the heaven, and when this ceases all mixed bodies will be dissolved into pure elements. ”

“ For, this grace was vouchsafed---either to their parents, that the sin of nature might be healed in them (because so long as that sin remained they were unable to beget without communicating original sin) ---or to nature itself which was healed. Now we must allow that every one needs the redemption of Christ personally, and not only by reason of nature, and one cannot be delivered from an evil or absolved from a debt unless one incur the debt or incur the evil: and consequently all could not reap in themselves the fruit of the Lord's prayer, unless all were born debtors and subject to evil. ”

“ Hence the forgiveness of debts or delivery from evil cannot be applied to one who is born without a debt or free from evil, but only to one who is born with a debt and is afterwards delivered by the grace of Christ. Nor does it follow, if it can be asserted without error that some die not, that they are born without original sin, although death is a punishment of original sin ”

“ The fire that will cleanse the face of the earth will be able to reduce suddenly to ashes the bodies of those that will be found living, even as it will dissolve other mixed bodies into their prejacent matter. ”

“ These words of Job do not mean that the vices actually remain in the ashes of the dead, but that they remain according to the ordering of Divine justice, whereby those ashes are destined to the restoration of the body which will suffer eternally for the sins committed. ”