Romans 8:12-13 — What is sanctification? How is the Christian moved toward greater holiness and away from sin? In this sermon on Romans 8:12–13 titled “A Call for Action,” Dr. Martyn Lloyd-Jones explains that Paul has been referencing the process of sanctification throughout the book of Romans but specifically addresses the theology of it in this passage. While Romans 7 is a battlefield for a Christian’s flesh and spirit, Romans 8 shows the victory that they have in Christ. While there is a war that wages in mortal bodies, God always provides a way for a Christian not to sin. A Christian is immediately released from the reign of sin by giving it over to Christ. Dr. Lloyd-Jones explains that it is a matter of their own actions and Christ does the rest. If they live by the flesh, they will die by the flesh. However, if they live by the Spirit, they are able to continually mortify their flesh and give it over to Christ. Paul is phrasing this using the present tense, meaning that this is a process where one must continually be active. Christians can rejoice that they are no longer under the obligation of the flesh and that Christ has given the Holy Spirit as their helper.
