I. Howard Marshall is professor emeritus of New Testament exegesis and honorary research professor at the University of Aberdeen, Scotland. His many books include New Testament Theology: Many Witnesses, One Gospel and Beyond the Bibl

Marshall's study on the Epistles of John constitute a single volume in The New International Commentary on the New Testament. Prepared by some of the world's leading scholars, the series provides an exposition of the New Testament books that is thorough and fully abreast of modern scholarship yet faithful to the Scriptures as the infallible Word of God.