Bede the Venerable
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.
They are forbidden to rejoice in the subjection of the spirits to God, since they were flesh; for to cast out spirits and to exercise other powers is sometimes not on account of his merit who works, but is wrought through the invocation of Christ’s name to the condemnation of those who mock it, or to the advantage of those who see and hear.