The Lake of Fire
(Gehenna)
This is the eternal and ultimate hell - the 3rd hell known as the Lake of Fire or the Lake of Burning Sulfur: Mat. 20:5, 14
This is the place where the final punishment will be executed: the 2nd death. Final destination of Satan, the Antichrist, the False Prophet, all demons, Hades and death, and all the wicked and unbelievers. Nobody can ever leave it: Rev. 14:9-11; 20:10. It is empty now.
Rev. 20:10-15; 21:8; 14:9-11; 2:11; Mat. 5:22; 10:28; 25:45-46; Lk.12:5