570. As infernal fire is the love of self and of the world it is also every lust of these loves, since lust is love in its continuity, for what a man loves he continually lusts after. Infernal fire is also delight, since what a man loves and lusts after he perceives, when he obtains it, to be delightful. Man's delight of heart is from no other source. Infernal fire, therefore, is the lust and delight that spring from these two loves as their origins. The evils flowing from these loves are contempt of others, enmity, and hostility against those who do not favor them, envy, hatred, and revenge, and from these fierceness and cruelty; and in respect to the Divine they are denial and consequent contempt, derision, and detraction of the holy things of the church; and after death, when man becomes a spirit, these evils are changed to anger and hatred against these holy things (see above, n. 562). And as these evils breathe forth continually the destruction and murder of those whom they account as enemies, and against whom they burn with hatred and revenge, so it is the delight of their life to will to destroy and kill, and so far as they are unable to do this, to will to do mischief, to injure, and to exercise cruelty.  Such is the meaning of "fire" in the Word, where the evil and the hells are treated of, some passages from which I will here quote in the way of proof:
Everyone is a hypocrite and an evil doer, and every mouth speaketh folly. For wickedness burneth as the fire; it devoureth the briers and thorns, and kindleth in the thickets of the forests, and they roll upward in the rising of smoke; and the people is become like food for fire; no man spareth his brother (Isa. 9:17-19). I will show wonders in the heavens, and in the earth blood and fire, and pillars of smoke; the sun shall be turned into darkness (Joel 2:30, 31). The land shall become burning pitch; it shall not be quenched night nor day; the smoke thereof shall go up forever (Isa. 34:9, 10). Behold the day cometh burning as a furnace, and all the proud and every worker of wickedness shall be stubble; and the day that cometh shall set them on fire (Mal. 4:1). Babylon is become a habitation of demons. They cried out as they saw the smoke of her burning. Her smoke goeth up unto the ages of the ages (Apoc. 18:2, 18; 19:3). He opened the pit of the abyss, and there went up a smoke out of the pit as the smoke of a great furnace; and the sun was darkened, and the air, by the smoke of the pit (Apoc. 9:2). Out of the mouth of the horses went forth fire and smoke and brimstone; by these was the third part of men killed, by the fire and by the smoke and by the brimstone (Apoc. 4:17, 18). If any one adores the beast he shall drink of the wine of the wrath of God mixed with unmixed wine in the cup of His anger, and shall be tormented with fire and brimstone (Apoc. 16:9, 10). The fourth angel poured out his bowl upon the sun; and it was given unto it to scorch men with fire; therefore men were scorched with great heat (Apoc. 16:8, 9). They were cast into a lake burning with fire and brimstone (Apoc. 19:20; 20:14, 15; 21:8). Every tree that bringeth not forth good fruit shall be hewn down and cast into the fire (Matt. 3:10; Luke 3:9). The Son of man shall send His angels, and they shall gather out of His kingdom all things that cause stumbling and them that do iniquity, and shall cast them into a furnace of fire (Matt. 13:41, 42, 50). The King shall say to them that are on the left hand, Depart from Me, ye cursed, into eternal fire, prepared for the devil and his angels (Matt. 25:41). They shall be sent into everlasting fire, into the hell of fire, where their worm shall not die, and the fire shall not be quenched (Matt. 18:8, 9; Mark 9:43-49). The rich man in hell said to Abraham that he was tormented in flame (Luke 16:24).
In these and in many other passages "fire" means the lust pertaining to love of self and love of the world, and the "smoke" therefrom means falsity from evil.