The ego is the barrier. When you feel you are, you are so much that nothing can enter in you. You are filled with your own self. When you are not, then everything can pass through you. You have become so vast that even the divine can pass through you. The whole existence is now ready to pass through you, because you are ready. So the whole art of religion is how not to be, how to dissolve, how to surrender, how to become an open space.