Paul when trying to answer the question- if believers can sin?, brings in the concept of slavery to God. Slavery is inevitable. As human beings, we are always slaves, either to Sin or to God. If God is our master, then we should not sin. Because sinning would prove sin to be our master. Therefore it is paramount to present ourselves without reservation to our new Master- Lord Jesus Christ, and not to master of Sin who the Lord has liberated us from by the death on the Cross.