'Wilderness' signifies something with little life in it, as described in the internal sense in Luke 1:80 'Wilderness' signifies somewhere there is no good because there is no truth. 'Wilderness,' as in Jeremiah 23:10, signifies the Word when it is adulterated.

(Odkazy: Arcana Coelestia 1927)

642. Fire shall go forth out of their mouth and shall devour their enemies, signifies that those who would do them harm fall into evils and falsities which are from hell, and these destroy them. This is evident from the signification of "fire," as being love in both senses, here the love of self and of the world, and thus the love of evil and falsity of every kind (of which above, n. 68, 504, 539). From this it follows that "fire shall go forth out of their mouth" signifies that those who desire to hurt them or do them harm fall into evils and falsities of every kind, which are from hell. Also from the signification of "devouring their enemies," as being that such will be destroyed by the falsities of evil; for "enemies" in the Word signify the falsities of evil, and "adversaries" evils, and the love of evil and falsity is what destroys.

[2] It is said that "fire shall go forth out of their mouth;" but this is said according to appearance, and it is according to this that it is also said that "fire and a flame go forth out of the mouth of God," and that "anger and wrath go forth from His nostril," and yet nothing of the fire of anger and wrath goes forth from Him, for He is good itself, love itself, and mercy itself, from which nothing of fire, of anger, or of wrath, can go forth, yet it is so said, because it so appears. It so appears, because when an evil and infernal spirit assails anything Divine with intent of hurting it, as when he blasphemes the Lord or the Word, or any good and truth of doctrine, or any good spirit or angel whom the Lord protects, that evil spirit immediately deprives himself of the Lord's protection; for every spirit, the evil as well as the good, is under the Lord's protection, and when that is taken away, he falls into evils and falsities of every kind which are from hell, and at the same time he falls into the hands of those that are from hell, who are called punishers, and these then punish and torment him according to the evil that he has done or has attempted to do. From this it can be seen that the Lord does no evil to such, but that the evil spirit himself brings evil upon himself, that is, the evil itself which is in him does it.

[3] This makes clear the meaning of the words, "If anyone desires to hurt the two witnesses, fire shall go forth out of their mouth and shall devour them;" the two witnesses are the good of love and charity, and the truth of doctrine and faith; and these are Divine, because they are from the Lord with angel and man; the meaning is, not that fire will go forth from these, but from the evil itself, which endeavors to do them harm, as has just been said; and that this is to be understood in a similar way as when it was said that fire, anger, and wrath go forth from Jehovah. (But these things are more fully set forth in the work on Heaven and Hell 545-550, under the head, The Lord Casts no one down into Hell, but the Spirit Casts himself down. )