WOW, WHAT A POST!
What helps me is trying to get a good, historical on such subjects as you have mentioned.
For example:
When did Hell first appear in the Bible? Did various translations promote the Hell people are familiar with?
One I found interesting is when Guides were first introduced into historical writings? Why are Guides not found in older writings?
What was the catalyst that caused Doreen Virtue to change?
When did Angels first appear in the Bible? Why is it the Hebrew word commonly used for Angels,not always translated in some translations, not as Angels but by different words?
and the list goes on and on......