Among these religions, the revealed religion of Muhammad is like the light of the sun among the lights of the stars.
His chief theological and philosophical works were Institutes of Natural and Revealed Religion (3 vols., 1772-1774); History of the Corruption of Christianity (2 vols., 1782); General History of the Christian Church to the Fall of the Western Empire, vols.
In theology he was not a naturalist or a deist, but a believer in the necessity of revealed religion for salvation.
The exposition of the conditions under which revealed religion is possible turns upon the absolute requirements of the moral law in human nature.
It simply means that a certain religious and philosophical tendency, which grew up slowly on Greek soil, was already implanted in those who occupied the vantage-ground of a revealed religion of redemption.