Ok, here is one that jabs into my mind occasionally.
The concept of 'sin' and the fallen state of man is rather profound and used to blow my mind, especially when Paul broke down the concept when writing about the struggle with the fleshly state. I could relate to those words and it was originally one of the main reasons I moved towards the scriptures (that, and the carrot of living forever of course ).
Let me asked you learned ones a question:
Did the concept of sin originate with the Jewish/Christian experience, or is it traceable to other mythological sources?