Moral law. Obedience to God.

“Conscience has absolute, exceptionless, binding moral authority over us, demanding unqualified obedience. But only a perfectly good, righteous divine will has this authority and a right to absolute, exceptionless obedience. Therefore conscience is the voice of the will of God“.80

“Man has within his breast a certain commanding dictate, not a mere sentiment, not a mere opinion or impression or view of things, but a law, an authoritative voice, bidding him do certain things and avoid others. What I am insisting on here is this, that it commands; that it praises, blames, it threatens, it implies a future, and it witnesses of the unseen. It is more than a man’s own self. The man himself has no power over it, or only with extreme difficulty; he did not make it, he cannot destroy it.”82

“I cannot escape the stroke of conscience.” -cf Venerable Matt Talbot

“The fear of the Lord is the beginning of Wisdom, and the knowledge of the Holy One is understanding.” – Ps 9:10

“The formidable atheist philosopher J.L. Mackie reflected in The Miracle of Theism that objective, prescriptive moral facts “constitute so odd a cluster of qualities and relations that they are most unlikely to have arisen in the ordinary course of events, without an all-powerful god to create them. If, then, there are such intrinsically prescriptive objective values, they make the existence of a god more probable than it would have been without them.”63 According to Mackie, the best explanation of objectively binding moral truths is God. But since he is an atheist, he rejects such truths on account of them being too inexplicable and unintelligible in a Godless world.”64

“Our sense of moral values and duties in a Godless world can be grounded in nothing more than our emotions and desires. Ultimately, then, it matters not how one feels about actions like rape or murder; it matters not what one thinks about them: none of our subjective powers are powerful enough to make a moral sentiment objectively binding for one and all. So unless God exists there is no rational ground for believing in objective, mind-independent morality. Skeptics must face this hard-to-swallow fact—and many have. Agreeing with Dostoevsky, the atheist philosopher Jean Paul Sartre admits, “Indeed, everything is permissible if God does not exist, and as a result man is forlorn.”65 Or as Alex Rosenberg puts it, if atheism is true then “ANYTHING goes.””66 (emphasis added)

-Nelson, Matt. Just Whatever: How to Help the Spiritually Indifferent Find Beliefs that Really Matter (Kindle Locations 1015-1022, 1024-1032, 1202-1206, 1210-1215). Catholic Answers Press. Kindle Edition.

Love & His will, as He gives me the grace to know and to do,
Matthew

63 J.L. Mackie, The Miracle of Theism (New York: Oxford University Press, 1982), 115-116.
64 See also J.L. Mackie, Ethics: Inventing Right and Wrong (London: Penguin Books, 1990).
65 Jean Paul Sartre, “Existentialism is a Humanism,” lecture at Club Maintenant in Paris, October 29, 1945.
66 Alexander Rosenberg, The Atheist’s Guide to Reality: Enjoying Life Without Illusions (New York: W.W. Norton, 2011), 3.
80 Peter Kreeft, “The Argument from Conscience,” in Fundamentals of the Faith: Essays in Christian Apologetics (San Francisco: Ignatius Press, 1988), 36-41.
82 Cited in Robert Spitzer, The Soul’s Upward Yearning: Clues to Our Transcendent Nature from Experience and Reason (San Francisco: Ignatius Press, 2015), 73.