Who would have thought that Martin Luther, champion of the gospel of God's grace in Jesus Christ, would also be the prophetic voice of his time preaching vociferously against the idolatry of financial and market systems that exploit people and are destructive of the common good of society? What a gift for clergy and lay alike that Michael Grzonka has brought this "forgotten Luther" to the table not only in his excellent translation of Luther's "Exhortation to the Clergy to Preach against Exploitation," but in his contextual preface and the insightful Foreword by Carter Lindberg. Wrestling with this material will be a joy for many and difficult for others, for within it you will find Luther himself challenging any complacency of discipleship and tepidness of witness within the cultural Christianity of our own time. In this study of Luther you will find grace informing social responsibility, faith active in love. --Rev. Conrad A. Braaten, retired senior pastor, Church of the Reformation, Washington, DC, and co-initiator of The Forgotten Luther Project Usury seems like such an outdated concept, yet Grzonka's translation of this important (and oft-overlooked) treatise, coupled with his incisive commentary and thought-provoking questions for review and study, brings Luther's critique of greed firmly into the present day. As economic inequality continues to increase, Grzonka reminds readers that an economy based on inequality and exploitation is as reprehensible now as it was five hundred years ago. When practices and policies allow a small few to thrive and leave many fighting to survive, the church cannot remain silent.

Luther's "Exhortation" starkly challenges us to confront economic injustice with the conviction that exploitation is an affront to both conscience and faith. One can hope that this new translation and set of study resources gain as much attention as the original writing did five centuries ago. As Grzonka makes clear, its fierce call to action is needed now more than ever. --Ryan P. Cumming, PhD, program director, hunger education, ELCA World Hunger Brilliant! Bravo and thanks to Mick Grzonka for bringing to light such a profound "Exhortation" from Luther, a powerful Christian blueprint for a fair economic order then, and certainly this very helpful and timely translation now. Grzonka makes this user-friendly for academy and congregation alike, with study notes, discussion questions, and more. I had the pleasure of getting acquainted with Mick at the Forgotten Luther III Conference we hosted at Saint Luke. Mick's enthusiasm for justice, faith, grace for all, and, yes, Luther is infectious.

Looking forward to using Charging Interest in the congregation. --Rev. Connie A. Miller, senior pastor, Saint Luke Lutheran Church, Silver Spring, Maryland Perhaps you've met Martin Luther the theologian or biblical scholar. In this wonderful work, Michael Grzonka introduces us to Martin Luther the economic critic. By contextualizing and translating Luther's fiery text "Exhortation to the Clergy to Preach against Usury," Grzonka gives us a Luther who connects, at root, just economic practices and Christian identity. Readers will benefit not only from Grzonka's faithful translation of Luther, but also from his helpful glossary of terms and thoughtful list of discussion questions for each section. I heartily recommend this book for those seeking wisdom on faithful Christian life in the midst of our economically unjust times.

--Rev. Dr. Justin Nickel, Frances and Baxter Weant Assistant Professor of Lutheran Studies, Lutheran Theological Southern Seminary of Lenoir-Rhyne University, and author of The Work of Faith: Divine Grace and Human Agency in Martin Luther's Preaching.