The only reason I'm not giving this book the full five stars is that (short as it was) it could have been a little shorter. The points were similar, though different, and I thought they would have been made a little clears if described more succinctly.
In saying that though, Keller has done en excellent job of applying a passage thoroughly and and freshly, while staying true to the gospel. Upon having read it I feel as though I have learnt many new things and in particular have a deeper understanding of God's grace and my rightful response to it.