This is one of the best introduction to post-liberalism, especially for those coming from an evangelical background. Like much of the post-liberal works, this book is highly technical and extremely philosophical (analytical). Exceptional response to many of the initial objections resulting from the post-liberal model.
I do have to mention that at one point Alister McGrath suggests that post-liberalism can devolve into what is described by deconstructive philosopher Rolland Barthes, "there is nothing outside the text." For someone interested in Continental philosophy, this misquote was a turn-off, to the point that it is the first thing I think of when I think of this book, and one of the first I think of when I think of McGrath. Its unfortunate, but its the truth. If it was an obscure quote, that's more understandable. But the quote is a subsection on the Wikipedia article. A quick search of Google is really all that was needed