This article analyzes the shifting concepts of law in Western law and thought in early modern times and today. It first shows how the modern movement of interdisciplinary legal studies emerged as a corrective to the narrow positivist concepts of law that prevailed before the 1960s. It then shows how, in anticipation of modern methods, earlier Protestant legal thinkers had already worked hard to reconcile biblical and human laws, natural and positive laws, canon and civil laws, cases and legal codes in pursuit of a more integrated jurisprudence.