Mark Mattes serves as the Lutheran Bible Institute Chair in Bible and Theology at Grand View University in Des Moines, Iowa. He has authored several books, including Luther's Theology of Beauty: A Reappraisal (Baker Academic, 2017), The Role of Justification in Contemporary Theology (Eerdmans, 2004), and Law and Gospel in Action: Foundations, Ethics, Church (New Reformation Press, 2019), and edited numerous other books. He serves as an Associate Editor for Lutheran Quarterly and on the Continuation Committee of the International Luther Congress.