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.
It speaks without a tongue, and listens without ears.
I'm a god, a planet, and measurer of heat. Who am I?
Blind but cruel.
What has ten letters and starts with gas?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?