In chapters 6–7 Paul discusses the Christian life using four metaphors: baptism (6:1–14), slavery (6:15–23), marriage (7:1–6), and psychology (7:7–25). The present section on slavery continues the interplay between indicative and imperative: what God has done leads to what we ought to do. Paul presents his ideas in a series of antithetical statements: “under law / under grace” (v. 15), “sin which leads to death / obedience which leads to righteousness” (v. 16), “free from sin / slaves to righteousness” (v. 18), “slavery to impurity / slavery to righteousness” (v. 19), “slaves to sin / free of righteousness” (v. 20), “free from sin / slaves to God” (v. 22), “result in death / the result is eternal life” (vv. 21–22), and “the wages of sin is death / the gift of God is eternal life” (v. 23).…