It is not the end of the physical body that should worry us. Rather our concern must be to live while we're alive - to release our inner selves from the spiritual death that comes with living behind a facade designed to conform to external definitions of who and what we are.
Obedience is detachment from the self. This is the most radical detachment of all. But what is the self? The self is the principle of reason and responsibility in us. It is the root of freedom it is what makes us men.