This is pretty decent.

When we see ourselves in the light of Jesus’ type of kingdom, and realize the extent to which we have been living by a different code altogether, we realize, perhaps for the first time, how far we have fallen short of what we were made to be. This realization is what we call “repentance,” a serious turning away from patterns of life which deface and distort our genuine humanness. It isn’t just a matter of feeling sorry for particular failings, though that will often be true as well. It is the recognition that the living God has made us humans to reflect his image into his world, and that we haven’t done so. (The technical term for that is “sin,” whose primary meaning is not “breaking the rules” but “missing the mark,” failing to hit the target of complete, genuine, glorious humanness.) Once again, the gospel itself, the very message which announces that Jesus is Lord and calls us to obedience, contains the remedy: forgiveness, unearned and freely given, because of his cross. All we can say is, “Thank you.”

-N.T. Wright, Simply Christian, p.208