Dr. Hubbard's area of specialty is the Pauline epistles and the Jewish literature of the second-temple period. He is the author of New Creation of Paul's Letters and Thought and a commentary on 2 Corinthians for the Zondervan Illustrated Bible Backgrounds Commentary. He has contributed articles to the Journal for the Study of the Pseudepigrapha, Journal for the Study of the New Testament, and Eerdman's Dictionary of the Bible. He has served on the pastoral staff to youth in the local church, and he is engaged in applying biblical exegesis to the development of Christian spiritual formation.