Prolific writer who has authored reference books (The Dictionary of Biblical Literacy and The Encyclopedia of Christian Marriage with Revell), inspirational biographies (Gifted Hands and Think Big for Zondervan / HarperCollins), and numerous essays and articles (in Writer's Digest, Guidelposts, Upper Room, Vibrant Life, Signs of the Times, The Christian Communicator). Author of My Parents, My Children: Spiritual Help for Caregivers (WJK, Fall 2000).