In God without Being, Marion explores various ways of thinking of God as 'beyond being'. In fact, he sees both philosophers and theologians as often 'idolatrous' in the sense of postulating God as the highest 'Being'. Marion is trying to reverse the very way in which philosophy and theology have usually operated and to push them in a truly radical direction. Instead of beginning with our categories and ways of thinking, he is attempting to turn the whole approach around. The question is whether he can do this: the paper presents Marion's project with some critical remarks. It seems there is something inherently problematic with this Marion's project.