For whatever has been created for the sake of something else, when that has ceased to be for the sake of which it was created, will itself also fitly cease to be, and will not continue to exist in vain, since, among the works of God, that which is useless can have no place; but that which was created for the very purpose of existing and living a life naturally suited to it, since the cause itself is bound up with its nature, and is recognized only in connection with existence itself, can never admit of any cause which shall utterly annihilate its existence. But since this cause is seen to lie in perpetual existence, the being so created must be preserved for ever, doing and experiencing what is suitable to its nature, each of the two parts of which it consists contributing what belongs to it, so that the soul may exist and remain without change in the nature in which it was made, and discharge its appropriate functions (such as presiding over the impulses of the body, and judging of and measuring that which occurs from time to time by the proper standards and measures), and the body be moved according to its nature towards its appropriate objects, and undergo the changes allotted to it, and, among the rest (relating to age, or appearance, or size), the resurrection. For the resurrection is a species of change, and the last of all, and a change for the better of what still remains in existence at that time.
Athenagoras of Athens
The Resurrection of the Dead
Chapter XII