Answer:
I am not alive, though I never die, to no one I've ever told a lie, today I can be god's warrior, and serve him with no horror, but tomorrow I might be devil's knight, for I am what ends the light.
If you are to keep it, you must first give it to me. What is it?
They come in many varieties: Red, Black, Dead, and Caspian to name a few.
What gets bigger the more you take away from it?
What never asks questions but receives a lot of answers?
It is something you will never see again.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?