From the link you never read:
"Faith in the existence of god was useful to the primitive man. It satisfied his curiosity. He thought that all things and events were god's creations and dispensations. Surrender to god satisfied his slave mind. As the concept of god was fashioned after human form, god was attributed the human qualities of righteousness, love and mercy. Obedience to a righteous god, however imaginary, served him at that stage to establish moral conduct in social groups. Faith in a god of love and mercy kept up hope amid troubles. Further, worship of god with song, dance and ritual satisfied man's aesthetic cravings. Thus the concept of god answered the several needs of the primitive man in a primitive way. And man stuck to god with intense faith.
Along with god, man fancied the existence of soul as a detachable part of the body. Dreams were supposed to be soul's rambles in strange lands during man's sleep and death as its permanent escape from the body. Imagination of the existence of other-worlds, like heaven and hell, and of rebirth, followed the need to provide disembodied souls with a habitation. Faith in the existence of soul and ancestral worship dispelled man's fear of death.
Belief in the existence of god and of soul and the influence of the belief on man's conduct constituted religion. And the essence of religion was man's surrender to god. Therefore, in terms of god (theos), which was the first one to which man surrendered, the attitude of surrender has come to be known as 'theism'.
Religion was the early phase of the attitude of surrender. Surrender absolved man of the sense of responsibility and afforded him the security and tranquility of a caged bird. Within the quietude of religious belief, theists started thinking and grew rational. So the analogical method of understanding yielded place to the advanced ways of causal logic and epistemological inquiry. Consequently, the concept of god gradually changed from the primitive fetish to a metaphysical notion of 'being and becoming.' The noisy ritual, blood sacrifices and ancestral worship of early religious belief were replaced by the silent meditation of later religion."