However, cultures strewn with the unregenerate can be stabilized by the presence of believers who are not suppressing reality and who read Natural Law aright because they are reading it through the lens of Special Revelation. In such cultures and in such cases what happens is that fallen man, being inconsistent with his self avowed God denying principles, sneaks into his Christ hating worldview capital from the Christian world and life view. This stolen capital keeps the unbeliever afloat so that, as one example, in a culture leavened with Christ (a Christian culture) they can make marriages that last and are comparatively stable.
In such a culture stabilized by a Christian ethos you would then expect there to arise a philosophy that embraced Natural Law because then the stability of the culture can be ascribed to man who reads NL aright instead of being ascribed to the Biblical beliefs of the Christians in the social order. However, all along, the epoxy of the social order is special revelation.
In such a culture, Christian thinkers themselves may well begin to talk about Natural Law as being the epoxy that allows Christians and fallen man to together create a stable social order. However, if those same Christian thinkers could live long enough lives to see the deterioration of their once stable cultures because the Christ hater began to be more and more consistent with their suppressing the truth in unrighteousness they would then realize that it was not Natural Law that was the epoxy that held the culture together but rather it was the explicit special revelation that was embraced by them and their kind that created a sturdy headwind that allowed the unregenerate to sneak that earlier spoken of stolen capital into their worldviews in order to keep stability in the culture leavened with Christ.
If the above isn’t helpful try to reverse engineer all of this. Imagine growing up in a Cannibalistic adulterous ridden culture where treachery and treason were exalted as genius and so was untouched by Biblical Christianity. Could anyone imagine that such fallen people would ever come up with a Natural law that taught the precepts found in the 10 commandments?
Of course the problem here is never with God’s natural revelation of which Natural Law is a subset. The heavens do indeed declare the handiwork of God. All of creation screams the truth of God. However, fallen man is like the chap who is constantly pushing the buttons in order to find a radio station that doesn’t play “the truth of God’s revelation.” Fallen man, becoming increasingly consistent with his enmity against God (Romans 8:7) would go as far as to rip his own eyeballs out in order to not see the truth contained in Natural Law.
Because of this Natural Law is a weak reed in order to lean on to make law for a particular social order populated by a large majority of people who are being ever more increasingly consistent with their hatred of Christ. We are seeing this daily in the West.
For Christians in the West then, the appeal is not to Natural Law. The appeal is to the politicus usus of God’s perspicuous Law in order to order social order aright. This, in combination of heralding the Gospel of Jesus Christ is the only way to pull back anti-Christ social orders from the edge of the abyss. Appeals to Natural Law will only hasten our nearing, ever nearing, to the final fall.