Fire Is A Good Thing

"...Yet once more I shake not the earth only, but also heaven...removing those things that are shaken...that those things which cannot be shaken may remain...for our God is a consuming fire". (Hebrews 12:27-29)

Is FIRE good or bad? 

Well, it depends on whether your perspective is short term or long term. In the short term fire can be an awfully destructive power, but in the process it purifies its object or victim.  God is a "consuming fire" that will purify his creation. The "lake of fire" is part of that process.

"...And the devil that deceived them was cast into the lake of fire...where the beast and the false prophet are... And death and hell were cast into the lake of fire...And whosoever was not found written in the book of life was cast into the lake of fire." (Revelation 20:6-15)

The "lake of fire" consumes the "devil" (slanderer), and the "beast and false prophet" (adversaries of God). It will also consume "death and hell" (the enemies of mankind). And any "not found in the book of life" will be consumed as well (consumed by the fire, not eternally tortured).  But even they will eventually be "made alive" when “death is abolished”.

"As in Adam all die, even so in Christ shall all be made alive...(when) death is abolished...that God may be all in ALL" (1 Corinthians 15:22-58) 

All will then be "reconciled" to God...

"...and through him (Jesus) to reconcile to himself ALL THINGS, whether things on earth or things in heaven, by making peace through his blood, shed on the cross.” (Colossians 1:20)

Fire is good according to God...it is false religious doctrine that makes it eternally bad.