Dr. Hahn is the general editor of the Ignatius Study Bible and is author or editor of more than 20 books, including Letter and Spirit: From Written Text to Living Word in the Liturgy (Doubleday, forthcoming 2005); Understanding the Scriptures (Midwest Theological Forum, 2005), and The Lamb???s Supper: The Mass as Heaven on Earth (Doubleday, 1999).