I got this for my Sunday School class at Westminster Presbyterian Church in Charlottesville, VA. It was not an assigned book, but after I gave up on Sarah Coakley's book, I asked one of the members (a former minister) what was a good book to read on the historical and theoretical development of the Trinity. He pointed me to this book. I am about half-way through it and am getting bogged down because, it seems to me, this Trinity stuff was all made up in the first 3 centuries AD after Jesus. It started with small extrapolations and then was spun and spun and spun. I doubt that any first century Christian would know the concept as it has spun out into ever more theoretical concepts. So, I don't know if I will finish the book.