Patrick Gray is Professor of Religious Studies at Rhodes College (US). He received his Ph.D. in religion from Emory University (US). His research focuses on the Greco-Roman context of early Christianity and the history of biblical interpretation. His publications include Varieties of Religious Invention: Founders and their Functions in History (Oxford University Press, 2016) and The Routledge Guidebook to the New Testament (Routledge, 2017).

Joshua Hall is a Professor of Economics, Chair of the Department of Economics, and Director of the Center for Free Enterprise, all in the John Chambers College of Business & Economics at West Virginia University (US). He earned his bachelor and master degrees in economics from Ohio University and his Ph.D. from West Virginia University. Prior to returning to his alma mater, he was the Elbert H. Neese, Jr. Professor of Economics at Beloit College (US). Hall is a Past President of the Association of Private Enterprise Education and is also a Senior Fellow at the Fraser Institute.

Ruth Wallis Herndon is Emerita Professor of History at Bowling Green State University (US). Her research focuses on early American social history, with a special emphasis on marginalized people in the colonial and Revolutionary eras--children, women, the poor, servants, and slaves. She received a Ph. D in history from The American University. Major publications include a monograph on the transient poor in the eighteenth century, Unwelcome Americans: Living on the Margin in Early New England (University of Pennsylvania Press, 2001), and an anthology (co-edited with John E. Murray), Children Bound to Labor: Pauper Apprenticeship in Early America (Cornell University Press, 2009).

Javier Silvestre is Professor of Economics in the Department of Applied Economics at the University of Zaragoza (Spain). He received his Ph.D. in economics at the University of Zaragoza. His research focuses on migration, population dynamics, history of workplace safety, and history of coal mining.