Short Review: Sanders is trying to show an Evangelical audience how and why the Trinity is important to Evangelical Theology by quoting Evangelicals. The weakness of the book is the editorial decision to focus on Evangelical sources. There are good things here, but because I am trying to focus on depth of thinking about the Trinity it was frustrating for me. It is like he is trying to show importance of Soccer to the world of sports by only looking at how Soccer has been thought about in the US since 1996.
My full review is on my blog at http://bookwi.se/deep-things-of-god/#