D. A. CARSON is Research Professor of New Testament at Trinity Evangelical Divinity School in Deerfield, Illinois. He is the author or editor of more than forty books, including From Sabbath to Lord's Day, The Sermon on the Mount, Exegetical Fallacies, Matthew (EBC), Showing the Spirit, How Long, O Lord?, The Gospel of John, The Gagging of God, and (with John Woodbridge) Hermeneutics, Authority, and Canon.