Christian Doctrine of Rule of Law per Christian Saint Germain’s 16th-century book, “Doctor & Student”
I.) Law of God known also as Law Eternal
A.) Light of Natural Reason – called; The Law of Reason
B.) Heavenly Publication (The Scriptures) called; The Law of God
C.) Order of Prince or secondary government (Parliament) called; The law of man though originally made by God
1.) Any law of man that is contrary to the law of God or the law of reason is no law but corruption and error.
The three above are all different ways of the same Eternal Law of God.
The impact of the above is that each characterization of Law was all seen as reflecting the law of God. Personally, I honestly don’t know why they needed these three usages if, in the end, they are all the same thing. However, what we learn here is that the Medievals did not think that there was some kind of common realm (I’m looking at you R2K) that was not legislated by God’s law. Now, they might call it Natural Law but inasmuch as they saw Natural Law reflecting the exact same Eternal law of God as we find in the Scripture at the end of the day the common realm was still be legislated by God’s law. The Medievals would have never owned a contradiction between God’s Law and Natural Law.