Abstract
In the seventeenth and eighteenth centuries rationalism about morality was repeatedly used to reject strong divine command theories of ethics. Such theories were morally unacceptable to many devout Christians. But deism, rationalist through and through, seemed to make revelation unnecessary, and with it most of Christianity. William Law, an influential divine command theorist of Hume's time, argued that Christians must consequently find rationalism unacceptable. Hume's effort to destroy moral rationalism functions to force his readers into a dilemma: either a morally horrifying divine command view of morals, or almost no religion at all