Mark 9:48
Where their worm is ever living and the fire is not put out.
Isaiah 66:24
And they will go out to see the dead bodies of the men who have done evil against me: for their worm will ever be living, and their fire will never be put out, and they will be a thing of fear to all flesh.
Matthew 25:41
Then will he say to those on the left, Go from me, you cursed ones, into the eternal fire which is ready for the Evil One and his angels:
Mark 9:43-45
And if your hand is a cause of trouble to you, let it be cut off; it is better for you to go into life with one hand than to have two hands and go into hell, into the eternal fire.