John MacArthur is the pastor-teacher of Grace Community Church in Sun Valley, California, where he has served since 1969. He is known around the world for his verse-by-verse expository preaching and his pulpit ministry via his daily radio program, Grace to You. He has also written or edited nearly four hundred books and study guides. MacArthur serves as the president of the Master's College and Seminary. He and his wife, Patricia, live in Southern California and have four grown children. J. I. Packer (DPhil, Oxford University) serves as the Board of Governors' Professor of Theology at Regent College. He is the author of numerous books, including the classic best-seller Knowing God. Packer served as general editor for the English Standard Version Bible and as theological editor for the ESV Study Bible. B. B Warfield was professor of theology at Princeton Seminary from 1887 to 1921. R. LAIRD HARRIS (1911-2008) was an author and lecturer and served as professor at Covenant Theological Seminary. PAUL D. FEINBERG (ThD, Dallas Theological Seminary) was professor of biblical and systematic theology at Trinity Evangelical Divinity School. He passed away in 2004.