Although he was bred in a Church and society in which men tried with their works to appease the God whom theologians and philosophers had carefully thought out, Martin Luther returned to the Gospel. Here God took the initiative to rescue and redeem His sinful creatures through His Son. This has rightly been called a Copernican revolution in the realm of religion. Just as Copernicus started with a geocentric, but reached a heliocentric conception of the physical world, Luther began with an anthropocentric or egocentric conception of religion, but came to a theocentric conception. In this sense, Luther is a Corpernicus in the realm of religion