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 is chancellor emeritus of the Master’s Seminary and Master’s University. He and his wife, Patricia, live in Southern California and have four grown children.

LEONARD G. GOSS served as editorial director and senior acquisitions editor at B&H Publishing Group. He also served as an editor at Crossway Books and Zondervan Publishing House. Throughout his thirty year career Goss has edited hundreds of books. He is the author of A Brief Style Guide to Good Writing for Authors and Editors.