It's hard for me to review this one. There were parts I thoroughly enjoyed and learned a lot from and there were parts where I needed to stop reading from frustration because Keller's view felt so narrow in its scope. So I'll review through the books three parts:
1. Contextualization: probably the most helpful section of the book as it speaks to how the gospel is heard and understood by people differently. Keller shares the ways that contextualization can be done faithfully and how this has been abused.
2. City as the Center of the Gospel: This section was the most frustrating for my rural heart. As cities are the greatest place of interaction and population, Keller argues that ministry should be city-focused. If we can reach the cities, he claims, we can reach the world. I want so much to agree, but I feel so discouraged in reading this because it reads "rural doesn't matter." I know that's not what Keller is going for here (clearly his book is meant for those within the city) but he is clear that he thinks city ministry is much more important in the grand scope than rural ministry.
3. Models to engage with culture: Maybe I've just been oversaturated in this area, but I don't find the transformationalist, relevant, counter-cultural, or 2K models helpful. And I think Keller is similar. He argues for a combination of all four, not sprouting off in their various directions, but rather focused on their respective "cores" for what each have in common (given his strong push for contextualization, this makes total sense).
All in all, a hard book for me to read. Maybe I'm just not as much of a Keller fan as others, and maybe my rural heart is influencing me a bit too much. Either way, this is one that does not (and cannot) have all the answers for ministry period, regardless of city or country, USA or abroad.