Origen

“ But the angels, who are the true rulers and generals and ministers of God, do not, as Celsus supposes, “injure those who offend them;” and if certain demons, whom Celsus had in mind, do inflict evils, they show that they are wicked, and that they have received no office of the kind from God. ”

“ Let not, then, Celsus try to scare us with threats of mischief from demons, for we despise them. And the demons, when despised, can do no harm to those who are under the protection of Him who can alone help all who deserve His aid; and He does no less than set His own angels over His devout servants, so that none of the hostile angels, nor even he who is called “the prince of this world,” [3] can effect anything against those who have given themselves to God. ”

“ And they even do injury to those who are under them, and who have acknowledged them as their masters; and accordingly, as it would seem that those who break through the regulations which prevail in any country in regard to matters of food, suffer for it if they are under the demons of that place, while those who are not under them, and have not submitted to their power, are free from all harm, and bid defiance to such spirits; although if, in ignorance of certain things, they have come under the power of other demons, they may suffer punishment from them. ”