Answer:
He has married many women, but has never been married. Who is he?
Alive without breath, As cold as death, Clad in mail never clinking, Never thirsty, ever drinking
I never was, am always to be. No one ever saw me, nor ever will. And yet I am the confidence of all, To live and breath on this terrestrial ball.
It's like food but water kills it. What is it?
What I am filled, I can point the way. When I am empty. Nothing moves me. I have two skins. One without and one within.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.