Wayne Grudem is professor of biblical and systematic theology at Trinity Evangelical Divinity School in Deerfield, Illinois. He holds degrees from Harvard (BA), Westminster Seminary (MDiv), and the Cambridge (PhD). He is author of a number of books, including the Silver Medallion Award-winning Systematic Theology. He is also the co-editor of Recovering Biblical Manhood and Womanhood. Wayne Grudem es profesor de teologia sistematica y biblica en Trinity Evangelical Divinity School, en Deerfield, Illinois. Ostenta titulos de Havard (Licenciatura en Arte) del seminario Westminster (Maestro en Divinidades), y de Cambridge (Doctor en Filosofia). Es autor de un gran numero de libros, entre los que se incluye el ganador del Premio Medallon de Plata Teologia Sistematica y es coeditor de Recovering Biblical. Jeff Purswell (MDiv, Trinity Evangelical Divinity School) is dean of academic and student affairs at the Pastors College of Sovereign Grace Ministries and is on the pastoral staff at Covenant Life Church, both in Gaithersburg, Maryland. He taught Greek as a teaching fellow in the New Testament department at Trinity Evangelical Divinity School.