Evolutionary explanation of morality self-refuting?

[Tea Earl Grey Hot]

From all my years as a theist, I'd say no. I'm guessing you'd say he's not then all-powerful, and I would respond that he's only all-powerful as is logically possible.

Actually, I was gonna say:

Then his nature is determined by something else then - some even greater standard?

Perhaps his nature nature is necessary, just like his existence is? I'm not sure how a real theist might respond to that, but I see your point.