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.
What is so delicate that even mentioning it breaks it?
Many foods can make me strong but give me water and I won't last long.
You feel this sensation when you are dehydrated.
What has a hundred limbs, sometimes leaves, but cannot walk?
I am a room that has a roof but no walls. What am I?