Re 21:8  But the fearful, and unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone: which is the second death.

Note.  This verse contradicts the doctrine of an ever-burning hell.  The lake of fire and brimstone is the second death - thus it does not burn for ever, but ends in eternal death.