Please forgive the quality of my voice! You may want to visit Roman's 5:19-21 to set the context for Roman's 6. (KJV)
We no longer must sin because we are crucified with Christ, buried with Him in Spiritual Baptism and raised from the dead just as Christ was so we can walk in newness of life.
Use our members as members of righteousness, not as instruments of sin (cf. Col. 3.5)