1695. That 'all their food' means the power to think what was false is clear from the meaning of 'food'. What the celestial, spiritual, and natural food are which people enjoy in the next life has been shown already in 56, 58, 680, 681. These also correspond to food for the body, and therefore they are also represented in the Word by food and are actually called food. The food of evil and hellish spirits however is that which is the reverse of wisdom, intelligence, and true knowledge, namely all falsity; and what is remarkable, evil spirits are also sustained by this food. The reason they are sustained by it is that it is their life. Unless they are given the opportunity to revile the truth, and indeed to blaspheme it, they cannot live. Yet they are not given the freedom to think and speak anything false except that which subsists from their own evil; they are not free to think or speak that which is contrary to their own evil, for this is deception. Insofar as their own evil is the origin of the falsity they express, their own life is the source of it; and in this case it is also forgiven them, since their nature is such that they could not otherwise live at all.

[2] With regard to their being stripped of the power to do evil and to think falsity, the situation is that in the conflicts brought about by temptations evil spirits are permitted to draw forth all the evil and falsity residing in a person, and to fight from that person's evil and falsity. But once they have been overcome they are no longer allowed to do so, for, being within that person, they instantly perceive that good and truth have been confirmed. Such perception exists more completely with spirits than with men. From the very sphere of a person confirmed in truth and good they recognize in an instant what the situation is, what response they will get, and much else. This is quite clear in the case of a spiritual and regenerate person, with whom evil spirits are present just as much as they are with one who is not regenerate; but with the regenerate person they have been subdued and are subservient. These are the things meant by their being stripped of the power to do evil and to think falsity.

681. What celestial and spiritual food is can be seen best of all in the next life. The life of angels and spirits is not maintained by any food like that found in the world but 'by every word that goes out of the mouth of the Lord', as the Lord Himself teaches in Matthew 4:4. The situation is this: The Lord alone is the life of all. From Him comes every single thing that angels and spirits think, say, and do. This applies not only to angels and good spirits but also to evil spirits. The reason the latter speak and do things that are evil is that they receive and corrupt in this way all goods and truths that are the Lord's. For as is the form of the recipient so is the nature of reception and affection. This may be compared to different objects which receive the sun-light. According to their form and according to the arrangement and delimitation of their parts, some convert the rays of light received into unpleasant and hideous colours, while other objects convert them into pleasing and beautiful colours. In such a manner the whole of heaven and the whole of the world of spirits derive their life from everything that goes out of the Lord's mouth, and from this each individual has his life. Indeed this applies not only to heaven and the world of spirits but also to the whole human race. I realize that people are not going to believe it, but I can positively declare from years of uninterrupted personal experience that this is utterly true. Evil spirits in the world of spirits however refuse to believe that it is so, and consequently they have been shown it convincingly time and again until they have grudgingly confessed it to be true. If angels, spirits, and men were deprived of this food they would instantly breathe their last.