In Phase 1 of his case for the existence of God (in When Skeptics Ask, hereafter: WSA), Norman Geisler argues for the existence of  a “supreme moral Lawgiver”.  The argument goes like this (see WSA, p. 22): Geisler’s Moral Argument 32. There is an objective moral law. 33. Moral laws imply a moral lawgiver. THEREFORE: … Geisler’s Five Ways – Part 9: The Supreme Moral Lawgiver