With sacrifices as an essential feature of all the ancient religions, if we except that of Persia in the time of Zoroaster, there was need of an officiating priesthood. The priests in all countries sought to gain power and influence, and made themselves an exclusive caste, more or less powerful as circumstances favored their usurpations. The priestly caste became a terrible power in Egypt and India, where the people, it would seem, were most susceptible to religious impressions, were most docile and most ignorant, and had in constant view the future welfare of their souls. In China, where there was scarcely any religion at all, this priestly power was unknown; and it was especially weak among the Greeks, who had no fear of the future, and who worshipped beauty and grace rather than a spiritual god. Sacerdotalism entered into Christianity when it became corrupted by the lust of dominion and power, and with great force ruled the Christian world in times of ignorance and superstition. It is sad to think that the decline of sacerdotalism is associated with the growth of infidelity and religious indifference, showing how few worship God in spirit and in truth even in Christian countries. Yet even that reaction is humanly natural; and as it so surely follows upon epochs of priestcraft, it may be a part of the divine process of arousing men to the evils of superstition.