Douglas Moo, the Kenneth T. Wessner Professor of New Testament at Wheaton College Graduate School, has a new commentary on Galatians in the Baker Exegetical Commentary on the New Testament. We recently sat down to talk about how it is that he was teaching at the seminary level just five years after his conversion, his process for writing commentaries (it’s the opposite of how most scholars do it), the big issue where he has changed his mind while studying Galatians (it has to do with justification), how he understands the relationship between the law of Moses and the law of Christ, and what projects are next for him.