Let's grant, for the sake of the argument, some of the apparent theses of the "Two Kingdoms" folks, and assent to the idea of "natural law" as being the normative principle for civil governments. What if, just as the light of nature points us to find the revelation from God and read it in things spiritual, so also the light of nature points us to find the revelation from God and read it in the moral aspects of civil law?
Is it possible that natural law leads to theonomy?
P.S. I want to be very clear: I hold to the tri-partite division of Old Testament law: the moral law is constant, the civil law is abrogated but relevant as to its general equity, and the ceremonial law is fulfilled in Christ. This is the "Confessional" position and different from the novel position espoused, it seems, among "two kingdoms" folks that the civil law was essentially ceremonial and consequently fulfilled in Christ.