Among the letters of Paul, Galatians burns like a firestorm of apostolic rebuke, persuasion and passion for the truth of the gospel. Against those who would preach "another gospel," Paul deploys an arsenal of biblical-theological reasoning and a rhetoric of vivid, contrasting images that have seldom failed to arrest readers of every era. Freedom in Christ is set against bondage to the law, adopted children of God are contrasted with slaves of elemental...