There is a near universality of religious beliefs throughout the history of civilization, a highly puzzling cultural observation that is still true in the twenty-second century. However, reasonable explanations for this universality can be derived by considering the origin of such beliefs. Since religions were an essential cultural element for primitive humans, the practice of imprinting them during early childhood was never abandoned, and religions became an integral component of most civilizations. The practices of religions have changed, but their moral teachings are still based on the Golden Rule, which was already known to Confucius, several centuries before the arrival of the Christian and Moslem prophets. The main religious denominations, however, have lost their unity because they have divided into smaller groups. The varieties of religious beliefs contradict each other, and they also contradict the unity of truth.