Robert Merrihew Adams 
Virtue of Faith and Other Essays in Philosophical Theology [PDF ebook] 

Robert Merrihew Adams has been a leader in renewing philosophical respect for the idea that moral obligation may be founded on the commands of God. This collection of Adams’ essays, two of which are previously unpublished, draws from his extensive writings on philosophical theology that discuss metaphysical, epistemological, and ethical issues surrounding the concept of God–whether God exists or not, what God is or would be like, and how we ought to relate ourselves to such a being. Adams studies the relation between religion and ethics, delving into an analysis of moral arguments for theistic belief. In several essays, he applies contemporary studies in the metaphysics of individuality, possibility and necessity, and counterfactual conditionals to issues surrounding the existence of God and problems of evil.