Re 20:15 And "whosoever" was not found written in the book of life was cast into the lake of fire.
This pretty much covers the rest of humanity.
Rev. 20:13, 14, KJ: “The sea gave up the dead which were in it; and death and hell* delivered up the dead which were in them: and they were judged every man according to their works. And death and hell were cast into the lake of fire.” (So the dead will be delivered from hell. Notice also that hell is not the same as the lake of fire but will be cast into the lake of fire.) (*“Hell,” Dy, Kx; “the world of the dead,” TEV; “Hades,” NE, AS, RS, JB, NW.)
What is the ‘torment’ to which these texts refer? It is noteworthy that at Revelation 11:10 (KJ) reference is made to ‘prophets that torment those dwelling on the earth.’ Such torment results from humiliating exposure by the messages that these prophets proclaim. At Revelation 14:9-11 (KJ) worshipers of the symbolic “beast and his image” are said to be “tormented with fire and brimstone.” This cannot refer to conscious torment after death because “the dead know not any thing.” (Eccl. 9:5, KJ) Then, what causes them to experience such torment while they are still alive? It is the proclamation by God’s servants that worshipers of the “beast and his image” will experience second death, which is represented by “the lake which burneth with fire and brimstone.” The smoke, associated with their fiery destruction, ascends forever because the destruction will be eternal and will never be forgotten. When Revelation 20:10 says that the Devil is to experience ‘torment forever and ever’ in “the lake of fire and brimstone,” what does that mean? Revelation 21:8 (KJ) says clearly that “the lake which burneth with fire and brimstone” means “the second death.” So the Devil’s being “tormented” there forever means that there will be no relief for him; he will be held under restraint forever, actually in eternal death. This use of the word “torment” (from the Greek baʹsa·nos) reminds one of its use at Matthew 18:34, where the same basic Greek word is applied to a ‘jailer.
What is the ‘fiery Gehenna’ to which Jesus referred?
Reference to Gehenna appears 12 times in the Christian Greek Scriptures. Five times it is directly associated with fire. Translators have rendered the Greek expression geʹen·nan tou py·rosʹ as “hell fire” (KJ, Dy), “fires of hell” (NE), “fiery pit” (AT), and “fires of Gehenna” (NAB).
Historical background: The Valley of Hinnom (Gehenna) was outside the walls of Jerusalem. For a time it was the site of idolatrous worship, including child sacrifice. In the first century Gehenna was being used as the incinerator for the filth of Jerusalem. Bodies of dead animals were thrown into the valley to be consumed in the fires, to which sulfur, or brimstone, was added to assist the burning. Also bodies of executed criminals, who were considered undeserving of burial in a memorial tomb, were thrown into Gehenna. Thus, at Matthew 5:29, 30, Jesus spoke of the casting of one’s “whole body” into Gehenna. If the body fell into the constantly burning fire it was consumed, but if it landed on a ledge of the deep ravine its putrefying flesh became infested with the ever-present worms, or maggots. (Mark 9:47, 48) Living humans were not pitched into Gehenna; so it was not a place of conscious torment.
At Matthew 10:28, Jesus warned his hearers to “be in fear of him that can destroy both soul and body in Gehenna.” What does it mean? Notice that there is no mention here of torment in the fires of Gehenna; rather, he says to ‘fear him that can destroy in Gehenna.’ By referring to the “soul” separately, Jesus here emphasizes that God can destroy all of a person’s life prospects; thus there is no hope of resurrection for him. So, the references to the ‘fiery Gehenna’ have the same meaning as ‘the lake of fire’ of Revelation 21:8, namely, destruction, “second death.”