What is the next greatest power after God himself? In the sermon from Romans 7:5–6 titled “The Nature of Sin,” Dr. Martyn Lloyd-Jones argues that it is the power of sin. As he breaks down Paul’s message in Romans, Dr. Lloyd-Jones outlines several key terms and defines them in the context of the message. It is essential for the reader to understand the terms in order to understand the apostle’s argument and doctrines of the law, salvation, and sanctification. For instance, the term “flesh” can be defined many ways but Dr. Lloyd-Jones believes that Paul uses this term to refer to the opposite of what it means to have life in the Spirit. Those who are in the flesh are unregenerate and cannot please God. When Paul refers to the “motions of sin,” he is talking about passions, affections, and lusting. All natural appetites were created and given by God, but the law aggravates these appetites and sinners allow them control, which lead to sin and death. However, Christ is working for His people and they died with Christ and to the power of sin.

http://www.mljtrust.org/sermons/the-nature-of-sin/