Five hundred years after Martin Luther and his Ninety-Five Theses ushered in the Reformation, best-selling author and controversial bishop and teacher John Shelby Spong delivers 12 forward-thinking theses to spark a new reformation to reinvigorate Christianity and ensure its future.

At the beginning of the 16th century, Christianity was in crisis - a state of conflict that gave birth to the Reformation in 1517. Enduring for more than 200 years, Luther's movement was then followed by a "revolutionary time of human knowledge". Yet these advances in our thinking had little impact on Christians' adherence to doctrine - which has led the faith to a critical point once again.

Spong contends that there is mounting pressure among Christians for a radically new kind of Christianity - a faith deeply connected to the human experience instead of outdated dogma. To keep Christianity vital, he urges modern Christians to update their faith in light of these advances in our knowledge, and to challenge the rigid and problematic Church teachings that emerged with the Reformation. There is a disconnect, he argues, between the language of traditional worship and the language of the 21st century. Bridging this divide requires us to rethink and reformulate our basic understanding of God.