Answer:
What moves without seeing and cries without eyes?
I wear a red robe, with staff in hand, and a stone in my throat.
What is bought by the yard by is worn by the foot?
What covers its face with its hands, speaks no language, yet most known what it's saying?
I cost no money to use, or conscious effort to take part of. And as far as you can see, there is nothing to me. But without me, you are dead.
I am your mother's brother's only brother in law. Who am I?