Tertullian

“ A distinction, however, must be made between a change, however great, and everything which has the character of destruction. For undergoing change is one thing, but being destroyed is another thing. Now this distinction would no longer exist, if the flesh were to suffer such a change as amounts to destruction. Destroyed, however, it must be by the change, unless it shall itself persistently remain throughout the altered condition which shall be exhibited in the resurrection. ”

“ To perish is altogether to cease to be what a thing once was, whereas to be changed is to exist in another condition. Now, if a thing exists in another condition, it can still be the same thing itself; for since it does not perish, it has its existence still. A change, indeed, it has experienced, but not a destruction. ”

“ A thing may undergo a complete change, and yet remain still the same thing. In like manner, a man also may be quite himself in substance even in the present life, and for all that undergo various changes—in habit, in bodily bulk, in health, in condition, in dignity, and in age—in taste, business, means, houses, laws and customs—and still lose nothing of his human nature, nor so to be made another man as to cease to be the same ”