Mark 9:48
where 'their worm does not die, and the fire is not put out.'
Matthew 25:41
Then he will say to those on his left 'Go from my presence, accursed, into the 'aeonian fire which has been prepared for the Devil and his angels.'
Mark 9:43-45
If your hand proves a snare to you, cut it off. It would be better for you to enter the Life maimed, than to have both your hands and go into the Pit, into the inextinguishable fire.