Thessalonians 2.16-17

16  So I advise you to live according to your new life in the Holy Spirit. Then you won’t be

     doing what your sinful nature craves.

17  The old sinful nature loves to do evil, which is just opposite from what the Holy Spirit wants.

     And the Spirit gives us desires that are opposite from what the sinful nature desires. These

     two forces are constantly fighting each other, and your choices are never free from this conflict.