Malcolm B. Yarnell III is Research Professor of Systematic Theology in Fort Worth, Texas, where he enjoys exploring theology with his students. He is the author of three widely-reviewed books, the first on systematic theology, The Formation of Christian Doctrine (B&H Academic, 2007); the second on biblical theology, God the Trinity: Biblical Portraits (B&H Academic, 2016); and the third on historical theology, Royal Priesthood in the English Reformation (Oxford University Press, 2014). He recently published a treatise on philosophical theology, John Locke's 'Letters of Gold' (Oxford, 2017), and co-authored a book on covenant ecclesiology, The Fourth Strand of the Reformation (Oxford, 2018). Dr. Yarnell has edited twenty books and journal issues and has contributed more than 125 essays, academic and popular, in the fields of systematic and historical theology as well as biblical theology and public theology. When not speaking to international academic or church audiences, Malcolm's personal passion is to engage in the contextual theological interpretation of the canon of Scripture with the Men's Bible Study weekly at Birchman Baptist Church in Fort Worth, Texas. Malcolm is better known as the father of such virtuous young men as Truett (26), Matthew (23), and Graham (18), and of such gracious young ladies as Kathryn (14) and Elizabeth (11), but he is best identified through the glorious presence of his lovely and brilliant wife, Karen.