The third chapter illustrates the nature of the second through fifth chapters. Each seeks to explore Calvin’s engagement with and use of tradition in different contexts. The third chapter takes up Calvin’s polemics with other thinkers and confessions. Through an odd quirk in the historiography surrounding Calvin, this chapter aligns most with the mainstream of Calvin interpretation. Almost every Calvin scholar or early modern analyst will admit that Calvin and other Reformers used tradition in their polemics – but it frequently is stated either as the exception that proves the rule that Calvin depended only upon scripture, or that it is a case where he and other Reforming writers had to adopt the methods of their foes. But the analysis of the material demonstrates that Calvin turned to tradition whether his foes were orthodox or heretical, Protestant, Radical, or Catholic. Calvin’s dependence on tradition and traditional sources undercuts the customary consideration of this area of his activity.