¹⁰ And the devil, who deceived them, was thrown into the lake of burning sulfur, where the beast and the false prophet had been thrown. They will be tormented day and night for ever and ever. ¹¹ Then I saw a great white throne and him who was seated on it. The earth and the heavens fled from his presence, and there was no place for them. ¹² And I saw the dead, great and small, standing before the throne, and books were opened. Another book was opened, which is the book of life. The dead were judged according to what they had done as recorded in the books. ¹³ The sea gave up the dead that were in it, and death and Hell gave up the dead that were in them, and each person was judged according to what they had done. ¹⁴ Then death and Hell were thrown into the lake of fire. The lake of fire is the second death. ¹⁵ Anyone whose name was not found written in the book of life was thrown into the lake of fire. 
–Revelation 20:10-15–

And they will go out and look on the dead bodies of those who rebelled against me; the worms that eat them will not die, the fire that burns them will not be quenched, and they will be loathsome to all mankind.
–Isaiah 66:24–

The cowardly, the unbelieving, the vile, the murderers, the sexually immoral, those who practice magic arts, the idolaters and all liars—they will be consigned to the fiery lake of burning sulfur. This is the second death.
–Revelation 21:8–