The conception of gods originated in fear and curiosity. Primitive man, unable to understand the phenomena of nature, and harassed by them, saw in every terrifying manifestation some sinister force expressly directed against him; and as ignorance and fear are the parents of all superstition, the troubled fancy of primitive man wove the God idea.
When primitive man heard thunder or saw the lightning, he could not account for either, and therefore concluded that back of them must be a force greater than himself. Similarly he saw a supernatural force in the rain, and in the various other changes in nature.