center of the gospel itself. Yet we call sola Scriptura the “formal principle” of the Reformation, because Scripture alone is the singular, authoritative source from which our theology—including sola fide—is developed. As the formal principle, sola Scriptura is the doctrinal foundation upon which we erect the entirety of Christian belief, including our understanding of the gospel itself. For the Reformers specifically, Scripture alone meant the Bible held authority over all