Whether the cleansing of the world will be effected by fire?

❌ Objection 1 : It would seem that this cleansing will not be effected by fire. For since fire is a part of the world, it needs to be cleansed like the other parts. Now, the same thing should not be both cleanser and cleansed. Therefore it would seem that the cleansing will not be by fire.

❌ Objection 2 : Further, just as fire has a cleansing virtue so has water. Since then all things are not capable of being cleansed by fire, and some need to be cleansed by water---which distinction is moreover observed by the Old Law---it would seem that fire will not at any rate cleanse all things.

❌ Objection 3 : Further, this cleansing would seem to consist in purifying the parts of the world by separating them from one another. Now the separation of the parts of the world from one another at the world's beginning was effected by God's power alone, for the work of distinction was carried out by that power: wherefore Anaxagoras asserted that the separation was effected by the act of the intellect which moves all things (cf. Aristotle, Phys. viii, 9). Therefore it would seem that at the end of the world the cleansing will be done immediately by God and not by fire.