Richard B. Gaffin, Jr. is professor of biblical and systematic theology. He is an ordained teaching elder in the Orthodox Presbyterian Church. 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. Stanley N. Gundry is senior vice president and editor-in-chief of the book group at Zondervan. With more than thirty-five years of teaching, pastoring, and publishing experience, he is the author or coauthor of numerous books and a contributor to numerous periodicals. Robert L. Saucy is distinguished professor of systematic theology at Talbot School of Theology, Biola University, in Los Angeles. Sam Storms is visiting associate professor of theology at Wheaton College in Wheaton, Illinois. He is the author of eight books and has contributed to others. Sam is a graduate of Oklahoma University (BA), Dallas Theological Seminary (ThM) and the University of Texas at Dallas (PhD). He and his family reside in Winfield, Illinois.