Answer:
What word begins and ends with an E, but only has one letter?
I'm really blue but when you see me I'm red. You don't see me too often. I'm there for you if you're hurt.
I cut through evil like a double edged sword and chaos flees at my approach. Balance I single-handedly upraise through battles fought with heart and mind instead of with my gaze.
I am your most powerful weapon; I come before your eyes. I help you seek the truth, yet I often give you lies. What am I?
I am a protector. I sit on a bridge. One person can see right through me, while others wonder what I hide. What am I?
No matter how little or how much you use me, you change me every month.