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 has four fingers and a thumb but is not alive?
Which popular cheese is made backwards?
Environmentalists want to keep this from drying.
What is born on the ground but floats to the sky, to be returned back again from the clouds up high?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.