Romans 6 is a major amplification on the theme of putting off the old man and putting on the new. The flesh of the old creation is put to death in baptism, buried in Christ’s death, and raised to life in the new creation in Christ. If we have died to sin, we can no longer live as sons of the slave woman, but must live according to righteousness as sons of the free. This is the main story arc of the whole scripture; from death to life, from slaves to sin to slaves to righteousness, from the kingdom of darkness to the kingdom of light. All of this is accomplished and given to us in Christ Jesus our Lord.