Romans 8:5-8 — What are some characteristics of a true Christian? In this sermon on Romans 8:5–8 titled “Controlled by the Spirit,” Dr. Martyn Lloyd-Jones is adamant that Paul is contrasting a Christian and a non-Christian and outlines several key points that should set a Christian apart. Paul’s primary object is to establish the final certainty for all who are in Christ. A Christian is one who is habitually dominated by the Holy Spirit and minds things of the Spirit, which is not something done out of duty. They also do not set their mind on religion, religious phenomena, or theology. Rather, they are fully committed and guided by the Spirit. A true Christian is concerned about themselves as a soul first and foremost. This means that their identity is in Christ and His work of salvation, not in a person’s human identity, career, family, or hobby. A Christian is also aware of their own sinfulness and concerned about the state of this world. These traits and more show someone who is guided by the Spirit as a true Christian.