I think greatest teaching abut hell is this:
And fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell.
Matt. 10:28
Jesus seems to say, hell is a place where body and soul are destroyed and I think that is the best knowledge about it. I recommend to believe Jesus.
Believing Jesus is absolutely the best thing one can do, however, one must understand what He is saying, in order to have the correct belief. The phrase “to destroy” in Matthew 10:28 is derived from the Greek word
apollumi, which is used 92 times in the New Testament. It is translated into such terms as perish, destroy, lose, and lost. While it is true that occasionally
apollumi is used to mean death (Matthew 2:13; 8:25; 26:52), most often it simply signifies the idea of suffering a loss of well-being and the loss of being blessed. As in Matthew 10:28, where Thayer's Greek Lexicon shows that the word (destroy) is being used metaphorically and the meaning is "to devote or give over to eternal misery".
In Luke 15, Jesus spoke of the shepherd’s lone sheep that was “lost” (
apollumi), but not annihilated (vs. 6). In that same chapter, He told of the father’s prodigal son who was “lost” (
apollumi), not extinguished (vss. 24,32). The wineskins of which Christ spoke in Matthew 9:17 did not pass into nonexistence, but were “ruined” (
apollumi). Jesus did not come to seek and to save those who did not exist; rather He came to save those who were alive physically, but ruined spiritually by sin [i.e., lost (
apollumi)—Luke 19:10]. Paul stated that the Gospel is “veiled to those who are perishing” (
apollumi) in sin, not to those who are exterminated by sin.
Considering the fact that even when
apollumi is used to mean “death” (Matthew 2:13; 8:25; 26:52), total annihilation of the person is not under consideration (for the soul still would be alive). Therefore, one can rightly conclude that there is not a single instance in the New Testament where
apollumi means “annihilation” in the strictest sense of the word. The Scriptures clearly teach that those who, at Judgment, will be “destroyed” because of their wickedness, will be like the “beast” who will “go to perdition” (
apoleia, Revelation 17:8,11) in “the lake of fire and brimstone,” where they will be, not annihilated, but “tormented day and night forever and ever” (Revelation 17:8,11; 20:10). “Destruction” does not equal “annihilation.”