Moral arguments for God’s existence may be defined as that family of arguments in the history of western philosophical theology having claims about the character of moral thought and experience in their premises and affirmations of the existence of God in their conclusions. The moral argument for the existence of God implies the existence of a Being that is the embodiment of the ultimate Good, which is the source of the objective moral values we experience in the world. The reasoning at the heart of the moral argument goes all the way back to Plato, who argued that things have goodness insofar as they stand in some relation to the Good, which subsists in itself. With the advent of Christian theism, the Good became identified with God himself.
Christian Apologetics: The Moral Argument – Doug Powell, MA–Find his book, Holman QuickSource Guide to Christian Apologetics (Holman Quicksource Guides), for purchase here
Can You Be Good Without Believing in God? That isn’t really the question–the question is, “Can You Be Good Without God?”
On Guard Conference: Paul Copan – Can We Be Good Without God?
Ravi Zacharias–Existence of God Pt 1-2/Moral Law–here