I have a problem with the whole "Jesus said something so that is the way it is" mentality.
"into everlasting fire, prepared for the devil and his angels"
Why do they assume that people will be burned forever in it?
It says the fire is everlasting. But, yeah, so what?
Why was there nothing said about this prior?
"And fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell. "
The understandings of these things have been in the Society's books for decades. There is no reason to question it
That is not hell. That is a horrible translation. It is gehenna which is a garbage pit in Jerusalem that was burning. Jesus used that as an illustration of eternal destruction. The dead bodies of criminals were put there as they were not in memorial tombs and they were not expected to have a resurrection.