If we have eternal life, we have the principles of eternal life working in us.  Jesus in us is the Life of God working His Life out through us.  This is living in the Spirit, walking in the Spirit, and manifesting the fruit of the Spirit.  “But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control” (Galatians 5:22-23).  The fruit can be summed up as love.  God is love, and He dwells in us; we have the fruit of this in order that we might spill it out on the world.