Robert Kolb (PhD, University of Wisconsin) is Mission Professor of Systematic Theology Emeritus at Concordia Seminary in St. Louis, Missouri, and is the author of many books.

Carl R. Trueman (PhD, University of Aberdeen) is Paul Woolley Professor of Church History at Westminster Theological Seminary in Philadelphia, Pennsylvania, and the author of numerous books. For the 2017-2018 academic year, he is serving as the William E. Simon Visiting Fellow in Religion and Public Life in the James Madison Program at Princeton University.

At the 500th anniversary of the Wittenberg Reformation, two highly regarded scholars compare and contrast the history and theological positions of the Reformed and Lutheran traditions. The authors tackle nine theological topics significant for the life of the church that remain a source of division between the two traditions. The book helps readers evaluate the strengths and weaknesses of the Reformed and Lutheran approaches to presenting the biblical message and invites honest, irenic, and open dialogue within the Protestant family.