Gregory 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.
(23. Mor. c. 4.) Now our Lord, in a remarkable manner, in order to put down high thoughts in the hearts of His disciples, Himself related the account of the fall which the teacher of pride suffered; that they might learn by the example of the author of pride, what they would have to dread from the sin of pride. Hence it follows, I beheld Satan as lightning fall from heaven.