No one knows how they have come in to existence as a person and perceiving this world. They strongly believe they are born to their parents and they are individual separate from the world and world existed prior to them and they are born in it afterwards. And because of this conviction they remain ignorant of their true existence, which is beyond form time and space. Because of their ignorance their judgment and reasoning is based on the form time and space. If the judgment and reasoning based on form, time and space than it is impossible to cross the threshold of duality.
They are totally unaware of the fact that, how the world came into existence. And also they are totally unaware of the fact that, without the world they cease to exist.
The creator and creation theory holds no water because man came into existence only after creator created the creation. Therefore man has not seen the creator creating the creation. The creator and creation theory based on the form or ego as self, whereas the self is not the form but self is formless consciousness. Therefore basing on the creator and the creationtheory, one will not be able to cross the threshold of duality. Without overcoming duality it is impossible to ultimate truth or Brahman.
People speak about after death but it never strikes to them what they were before birth. If they find out what they were before birth then the problem will be solved because whatever they were before birth they will become the same after death.
The one which witnesses the experience of birth, life, death and the world is birth –less and deathless because it is formless, timeless and space- less existence, which is consciousness. Consciousness is the innermost self. Consciousness is cause of the universe and it itself is uncaused.