Christians' Moral Compass

Suppose Omega makes a credible threat that if you ever step inside a bathroom between 7AM and 10AM in the morning, he'll kill you. Would you be panicked by the prospect of Omega withdrawing his threat? Would you cower in existential terror and cry: "If Omega withdraws his threat, then what's to keep me from going to the bathroom?" No; you'd probably be quite relieved at your increased opportunity to, ahem, relieve yourself.

Which is to say: The very fact that a religious person would be afraid of God withdrawing Its threat to punish them for committing murder, shows that they have a revulsion of murder which is independent of whether God punishes murder or not.

The fear of losing a moral compass is itself a moral compass. Indeed, I suspect you are steering by that compass, and that you always have been. As Piers Anthony once said, "Only those with souls worry over whether or not they have them." s/soul/morality/ and the point carries.

-Eliezer Yudkowsky, heavily edited from Overcoming Bias