Religious beliefs have been deeply rooted in human life wherever human society has lived since ancient times till today. Researches about what kind of religious beliefs existed in which societies started from the time of Xenophanes and Herodotus and continued till today. All kinds of religious beliefs prevailing in contemporary cultures are discussed under the heading of ‘religion’. Religious beliefs today vary from culture to culture; They have changed over time. This article is about how the system of religion has undergone changes in its evolutionary stage, what role it has played in each stage, why religious belief exists in all societies today, what role it plays, and what its activities are.

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