He was Assistant Director of the Moody Correspondence School and spoke regularly over the Moody network. He also taught in the Moody Evening Extension School. During those years he authored his first three books - Exploring the Scriptures, Exploring Romans, and Exploring Revelation.
He has authored over fifty books, including a complete set of New Testament Commentaries. Dr. Phillips is now retired from writing and preaching. He and his wife Betty reside in Winston-Salem, North Carolina.