What is both Good and New about the Good News is the wild claim that Jesus did not simply tell us that God loves us even in our wickedness and folly and wants us to love each other the same way and to love Him too, but that if we let Him, God will actually bring about this unprecedented transformation of our hearts Himself.
What is both Good and New about the Good News is that mad insistence that Jesus lives on among us not just as another haunting memory but as the outlandish, holy, and invisible power of God working not just through the sacraments but in countless hidden ways to make even slobs like us loving and whole beyond anything we could conceivably pull off by ourselves.
Thus the Gospel is not only Good and New but, if you take it seriously, a Holy Terror. Jesus never claimed that the process of being changed from a slob into a human being was going to be a Sunday School picnic. On the contrary. Child-birth may occasionally be painless, but rebirth never. Part of what it means to be a slob is to hang on for dear life to our slobbery.