[DanaC]

My bad, I used the slang "be bad" for misbehaving, which seems to have confused you. I apologize.
If a parent is going to freak their kid with heavy duty fire and brimstone, don't you think they would be the type to freak the kid with something else if hell were not an option. What's the difference between;

If you get out of that bed you'll burn in hell.
and
If you get out of that bed the monster under the bed will eat your feet.

I totally agree.