What is the author's main purpose for writing "Not My Bones"?

The Author's Main Purpose for writing is unafraid of death.

Explanation:

Human beings did not bother about death. He said our skeleton is a temporary home. it gives the only shape. It converged for a breath. It having a sense of sadness. It means spiritual. The author said that our soul runs free. It also roams everywhere. He referred that the soul and heart of a person is of ultimate importance. It is like a horseless bridle. Our world is filled with an enormous amount of voices.