Malachi 4:1 (NIV)
Surely the day is coming; it will burn like a furnace. All the arrogant and every evildoer will be stubble, and that day that is coming will set them on fire,” says the Lord Almighty. “Not a root or a branch will be left to them.
Revelation 20:14 (NIV)
14Then death and Hades were thrown into the lake of fire. The lake of fire is the second death.
Revelation 21:8 (NIV)
8But the cowardly, the unbelieving, the vile, the murderers, the sexually immoral, those who practice magic arts, the idolaters and all liars–their place will be in the fiery lake of burning sulfur. This is the second death.”