Evolution of morality

[OnlyNatural]

Anytime I bring this up to a theist they respond "That's Great...you know the Ought but only GOD Can Justify Morality"....when I ask them to elaborate on Justify....I don't get what they mean.

I assume that they mean its GUARANTEED...but then again if that's the case its not really a moral action because there is no choice you're just adhering to duty.

They mean to say that morality is guaranteed? Or that reward/punishment in the afterlife guarantees moral behaviour? Obviously they haven't looked around, then, because immorality is happening all the time, by both believers and non-believers. If God just created us to be moral, we'd have no choice, like you said. But like all evolved characteristics, behaving morally is obviously not universal, there are varying degrees, and then we have sociopaths.

But somehow theists can't seem to justify why that is. They want to know there's an objective standard of morality, determined by God. And if people behave immorally, it's because they're sinners or under the influence of Satan. It's so convenient to frame complex phenomena in black and white terms like this, but also incredibly silly. It's just too easy, and it stops you from thinking more critically about why people behave in good and harmful ways, and how we, as humans, define what is good and harmful.