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. John T. Pless has served on the faculty of Concordia Theological Seminary in Fort Wayne since 2000 teaching pastoral theology, theological ethics, and catechetics. Prior to coming to the faculty he served in campus ministry at Valparaiso University and the University of Minnesota. Prof. Pless is the author of numerous journal articles, chapters, and books including Handling the Word of Truth, Martin Luther: Preacher of the Cross, and Praying Luther's Small Catechism.

Beginning in 2009, he has served as visiting professor at Lutheran Theological Seminary in Pretoria, Africa. He is a fellow of the Luther Academy for Madagascar. Prof. Pless is book review editor for Logia and a member of the editorial council for Lutheran Quarterly.