First published in 2012 by Penguin Books, it describes the history of Christianity, from its foundations to the present day.

[7] In shortlisting the work for the 2012 Prime Minister's Literary Awards, the judges described Blainey as demonstrating that he was one of Australia's "finest writers", who had with "practiced thoroughness, fairness and clarity" provided a "sweeping and lucid account" of Christianity: " Neither blind disciple, nor steely-eyed sceptic, Blainey tracks 2000 years of evidence, from the life of Jesus, to the impact of Charles Darwin and beyond.

"[1] Dr Rachael Kohn discussed the book with Blainey in a Radio National Breakfast broadcast on Christmas morning in 2011.

She described the book as a grand narrative that "walks the tightrope between the account of a ‘true believer’ and a historian who takes the view that Christianity’s remarkable achievement lies in its diversity and ability to re-invent itself".

[8] The Reverend Peter Kurti, a research fellow at the Centre for Independent Studies wrote a positive review of the book, saying "Blainey's great strengths is that he is a superb story-teller and goes to great lengths to get the story right so that lay readers, particularly those with little knowledge of Christianity, can follow the thread and judge for themselves the extent of Christian influence on the world.