The body belongs to the earth, you belong to the sky. The body belongs to matter, you belong to God. The body is gross, you are not. The body has limits, is born and will die; you are never born and you will never die. This becomes your own experience, not a belief.
Belief is fear-oriented. You would like to believe that you are immortal, but belief is just a belief, something pseudo, painted from the outside. Experience is totally different: it wells up within you, it is your own. And the moment you know, nothing can ever shake your knowing, nothing can destroy your knowing. The whole world may be against it, but you will still know that you are separate. The whole world may say there is no soul, but you will know there is. The whole world may say there is no God, but you will smile -- because the experience is self-validating, it is self-evident.