Against Celsus 7.4

Hence we show, gathering from the sacred writings, that the prophets among the Jews, being enlightened by the divine Spirit as much as was useful to the prophets themselves, were the first to enjoy the coming of the Higher One to them. And through the touch, so to speak, of what is called the Holy Spirit on their soul, they became clearer-sighted in mind and brighter in soul, and in body too, which no longer opposed the virtuous life, since it was put to death according to what we call “the mind of the flesh.” For we are persuaded that by the more divine “Spirit” “the deeds of the body” are put to death, as well as the enmities that begin from the mind “of the flesh,” which is hostile to God. But if the Pythian priestess is beside herself and not in her own mind when she prophesies, what kind of spirit must we think it is that pours darkness over the mind and the reasoning? Is it not of the same kind as the race of demons, which not a few Christians drive out of those who suffer from them, without any curious, magical, or pharmaceutical means, but by prayer alone and simple adjurations and such means as a simpler man could apply? For as a rule it is unlearned people who do this, since the grace in the word of Christ shows the worthlessness and weakness of the demons, which do not at all need, in order to be defeated and to yield and leave the soul and body of a man, someone wise and powerful in rational demonstrations of the faith.