Check out this great quote by Christopher J.H. Wright from The Mission of God, over on Of First Importance.
Bluntly, we need a holistic gospel because the world is in a holistic mess. And by God’s incredible grace we have a gospel big enough to redeem all that sin and evil has touched. And every dimension of that good news is good news utterly and only because of the blood of Christ on the cross.
– Christopher J. H. Wright, The Mission of God, 315.
Also, for an interesting discussion on just what the “gospel” is, go check out my friend Stephen’s blog over at Daylight.