Unbelief represents the fall of humanity by H.E. The Religious Authority, Sayyed Muhammad Hussein Fadlullah

Unbelief represents the fall of humanity. It is as if a man was in the sky, then he suddenly fell to the ground. With no safety net to fall on, he will be snatched by the birds, and thrown back to earth, or they would eat him or just tear him into parts and leave him.
He could also be thrown from one place to another by the winds and then be dumped into a place that has no bottom, making him lose any connection with the facts of life and the issues that he should be responsible to be concerned with. This is because anyone who loses the right conception of the oneness of Allah does not possess the consistency and the profoundness and the extension of man's relation with God.
Thus, worshipping in Islam is not defined by form, but it also extends to the internal meaning of conception on the level of thought, piety on the level of feelings and love on the level of the spirit. This will deepen God's presence in man's awareness, as well as in the movement of reality making him pious in both heart and body with one complementing the other to form a piety of life.