I know that I have discussed the concept before, but as usual, someone has done it first and done it better. From Francis Schaffer’s How Should We Then Live?:
In the United States many other practical problems developed as man’s desire to be autonomous from God’s revelation—-in the Bible and through Christ—-increasingly through its natural conclusions. Sociologically, law is king, (Samuel Rutherford’s Lex Rex) was no longer the base whereby one could be ruled by law rather than the arbitrary judgments of en and whereby there could be wide freedoms without chaos. Any ways in which the system is still working is largely due to the sheer inertia of the continuation of the past principals. But this borrowing cannot go on forever.
As we have seen, there is a danger without a sufficient base modern science will become sociological science; so civil law has moved toward being sociological law.
He never lived long enough to know how right he was, but I am certain he would have had no comfort from it.