Answer:
What can you keep after giving it to someone?
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 word of five letters has only one left when two letters are removed?
I'm the start of eternity and the end of space. There are two of me in heaven and one in hell.
You could do this to a motion, see it on a watch, or place this in a race.
Pirates put their booty in it.