The lake of fire is a place of non existance.


Revelation 20:10 And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and shall be tormented day and night for ever and ever.


Revelation 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.


There will be no more devil as the devil will not be a devil anymore, he will be reconciled to God and be a good angel again. Get it?

When all is reconciled there will be no more evil, no more beast, false prophet, these things will be things of the past tense.