Basil the Great
Catena Aurea · Lukasevangelium 10
And the seventy returned again with joy, saying, Lord, even the devils are subject unto us through thy name. And he said unto them, I beheld Satan as lightning fall from heaven. Behold, I give unto you power to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you. Notwithstanding in this rejoice not, that the spirits are subject unto you; but rather rejoice, because your names are written in heaven.
(adv. Eunom. l. 3.) For the heavenly Powers are not naturally holy, but according to the analogy of divine love they receive their measure of sanctification. And as iron placed in the fire does not cease to be iron, though by the violent application of the flame, both in effect and appearance, it passes into fire; so also the Powers on high, from their participation in that which is naturally holy, have a holiness implanted in them. For Satan had not fallen, if by nature he had been unsusceptible of evil.