William O. Walker, Jr. (Ph.D., Duke University) is the Jennie Farris Railey King Professor Emeritus of Religion at Trinity University in San Antonio, Texas. He has served as author, co-author, editor, associate editor, or assistant editor of a number of books, including Paul and His Legacy; Collected Essays (2014), Interpolations in the Pauline Letters (2001) and The HarperCollins Bible Dictionary (1996). He has also published more than fifty articles on New Testament topics. He is a member of Studiorum Novi Testamenti Societas, the Society of Biblical Literature, the Catholic Biblical Association of America, and the Westar Institute’s Acts Seminar.