But for the cowardly and unbelieving and abominable and murderers and immoral persons and sorcerors and idolaters and all liars, their part will be in the lake that burns with fire and brimstone, which is the second death – Revelation 21:8

The dictionary definition of hell: Abode of the dead, abode of devils and of condemned spirits in torment;
place or state of wickedness or misery

And if your eye causes you to stumble, pluck it out and throw it from you, it is better for you to enter life with one eye, than having two eyes, to be cast into the hell of fire. – Matthew 18:9, Mark 9:47

“to go into hell, into the unquenchable fire” – Mark 9:43

“where their worm does not die, and the fire is not quenched.” – Mark 9:48

And if anyone’s name was not found written in the book of life, he was thrown into the lake of fire – Revelation 20:15

and the devil was thrown into the lake of fire and brimstone, where the beast and false beast are also, and they will be tormented day and night forever Rev 20:10

And do not fear those who kill the body, but are unable to kill the soul but rather fear Him who is able to
destroy both soul and body in hell – Matthew 10:28