Revelation 20:14-15

20:14 And death and hell were cast into the lake of fire. This is the second death. 20:15 And whosoever was not found written in the book of life was cast into the lake of fire.

Revelation 19:20

19:20 And the beast was taken, and with him the false prophet that wrought miracles before him, with which he deceived them that had received the mark of the beast, and them that worshipped his image. These both were cast alive into a lake of fire burning with brimstone.