Answer:
I am born in fear raised in truth and I come to my own in deed. When comes a time that I'm called forth I come to serve the cause of need.
Angels and pilots work with me.
I am constantly overlooked by everyone but everyone has me.
I am gentle enough to soothe your skin, light enough to fly in the sky, strong enough to crack rocks. What am I?
Of these things - I have two. One for me - and one for you. And when you ask about the price I simply smile and nod twice.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.