Love is motivated by the joy of sharing our fullness, but the works of the flesh are motivated by the desire to fill our emptiness... [The flesh is] man’s ego which feels a deep emptiness and uses the means within its own power to fill that emptiness. If it is religious, it may use law; if it is irreligious, it may use booze... [Yet] when God frees us from guilt and fear and greed and fills us with His all-satisfying presence, the only motive left is the joy of sharing our fullness.
John Piper