There is a lot of personal ideas about this word "hell", that go way beyond the Biblical meaning of "grave" in the Bible. In the NT the word "Gehenna", (a continously burning dump outside Jerusalem where they threw trash and the bodies of criminals), and Jesus used it in His Parables, to stress His preaching message.
Only in the "Gehenna" applications of scripture (errently also translated as the word "hell"), do we find the burning aspect contained within the Words of the Messiah. Which was of course, a very demonstrative judgement for those who rejected Him to one day face for their own sinful unrepentant selves. An ignoble death, separated from those buried awaiting the resurrection. Those fires were "everlasting"... from generation to generation. It would have appropriately caused many to examine their lives and conduct no doubt.
The actual teachings of a demonic world with it's associated "Dante's inferno" type of torturous hell idea didn't come along until after the Jews rejected YHVH and invented their Babylonian Talmud containing the esoteric magiks and incantations and secret knowledge society of the Pharisees. The Jews invented the false teachings of an afterlife of fire and misery along with their devil and demon theology.
When Jesus came onto the scene, the Jews had so dismally departed from Truth into Caballism and Esoteric Gnostism that they, in their ignorant wickedness referred to such "Ba'al" forms of imaginary false gods and minions... against Jesus.
Anyone who would like, I can provide the proof source of all of this superstition straight out of the Jewish Encyclopedia. Peace and Blessings in the Joy of the Kingdom of Christ.