Added The Moral Argument for God’s Existence, the Natural Moral Law, and Conservative Metaphysical Naturalism (2004) by Arnold T. Guminski to the Moral Arguments page under Arguments for the Existence of a God, the Naturalism page under Nontheism, and the William Lane Craig, J. P. Moreland, and Paul Copan pages under Christian Apologetics and Apologists in the Modern Documents section of the Secular Web Library.
Some Christian philosophers and apologists have vigorously mounted a moral argument for God’s existence made apart from the standard nonmoral grounds. The moral argument is based upon the idea of natural moral law (fundamental moral principles and norms apprehended as such by persons of good will as universally binding and not based upon supernatural revelation or divine positive law). In this expanded version of a talk given to the University of Colorado Theology Forum, Arnold T. Guminski aims to show why those naturalists and theists who hold that the natural moral law obtains should conclude that the moral argument for the existence of God is unsound. Particular attention is given to the writings of J. P. Moreland, William Lane Craig, and Paul Copan.