Hi Casey,
Here is a basic bib that Dr. VanDrunen gave me a while back . . .
Martin Luther, “Temporal Authority,” vol.45 in Luther’s Works
John Calvin, Institutes, Book 3, Chapter 14–16, and Book 4, Chapter 20 (Especially sections 1 and 2)
Church of Scotland, Second Book of Discipline, Chapter 1
Francis Turretin, Institutes, 2.486–90; 3.278–81
George Gillespie, Aaron’s Rod Blossoming, Book 2, Chapter 5
Wilhelmus a Brakel, The Christian’s Reasonable Service, 1.561–66
Stuart Robinson, The Church of God, (Epecially pp. 84–86)
Darryl Hart, A Secular Faith
David VanDrunen, A Biblical Case for Natural Law, Chapter 3
David VanDrunen, “The Two Kingdoms: A Reassessment of the Transformationist Calvin,” Calvin Theological Journal 40 (Nov 2005): 248–66.
David VanDrunen, “The Two Kingdoms Doctrine and the Relationship of Church and State in the Early Reformed Tradition,” Journal of Church and State 49 (Autumn 2007): 743–63.