“God alone is sovereign. His authority alone is absolute and universal. All men and spheres are subject to God. The civil magistrate derives his authority from God. Apart from divine institution and sanction, civil government has no right to exist. ‘The powers that be are ordained of God’ (Rom. 13:1). Since civil government derives its authority from God, it is responsible to God and therefore obligated to conduct its affairs in accordance with God’s will. The infallible revelation of his will God has deposited in the Scriptures. It will surely be granted that there is much in the Scriptures that has to do with the conduct of civil government. And this simply means that the Word of God bears upon civil authority with all the stringency that belongs to God’s Word.
“Furthermore, the Word of God reveals that Christ is head over all things, that he has been given all authority in heaven and in earth. The civil magistrate is under obligation to acknowledge this headship and therefore to conduct his affairs, not only in subjection to the sovereignty of God, but also in subjection to the mediatorial sovereignty of Christ, and must therefore obey his will as it is revealed for the discharge of that authority which the civil magistrate exercises in subjection to Christ. . . . To recede from this position or to abandon it, either as conception or as goal, is to reject in principle the sovereignty of God and of his Christ”
John Murray
Collected Writings of John Murray, Volume One: The Claims of Truth,
The Banner of Truth Trust, 1976 Valerie Murray, pp. 364-365.