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 20:10)
See on ch. 19:20. Here the lake of fire is the surface of the earth turned into a sea of flames, which both consumes the wicked and purifies the earth.
Are.
This word is supplied. The context suggests supplying the words “were cast.” See on ch. 19:20.
Shall be tormented.
The Greek verb is in the plural. The subject of the verb is the devil, the beast, and the false prophet. It should be noted that the beast and the false prophet are not literal but symbolic creatures.
For ever and ever.
Literally, “unto the ages of the ages” (see on ch. 14:11).