About the Author

Wayne Grudem (PhD, University of Cambridge) is Distinguished Research Professor Emeritus of Theology and Biblical Studies at Phoenix Seminary in Phoenix, Arizona. He is the author of more than twenty-five books, including Bible Doctrine and Christian Beliefs.

John Piper is founder and lead teacher of desiringGod.org and chancellor of Bethlehem College & Seminary. He served for thirty-three years as a pastor at Bethlehem Baptist Church in Minneapolis, Minnesota, and is the author of more than fifty books, including Desiring God; Don’t Waste Your Life; and Providence.