Walk by the Spirit is an ebook by Derek Thompson based on a series of after-dinner talks on the Apostle Paul's letter to the Galatians. Topics include Why does Paul get so upset about circumcision? What gave him the confidence that he was right? Do revivals only occur in God's timing? Does disunity in the church hinder revival? What can the church do to revive our unbelieving society? It is not an academic commentary on a biblical book, but it does go through the text of Paul's letter bringing out its relevance for today. It does so in a spirit of good humour. The last chapter is worth the price of the book.