Why did Les say it is amazing that man is as civilized as he is?
It is amazing because the unsaved person is not subject to the law of God; the Adamic mind is enmity against God and not subject to His law. God does not expect unbelievers to keep His law or be good, since He sees their nature is anything but good.
Les explains that the carnal or old Adamic mind is enmity against God and is not subject to the law of God. He calls that verse shocking and scary. He says it is amazing that man is as civilized as he is because the unsaved person is not subject to the law of God. God does not expect the unbeliever to keep His law or to be a good person, because God sees down in his nature that he is anything but good. Such rebellion makes people enemies of God rather than friends.