2012 is the three-hundred and fiftieth anniversary of the 1662 Book of Common Prayer. The adoption of that book in England was not without controversy. About 20% of the ministers of the Church of England resigned at that time, and many lay people left the Church. This was the start of the 'Nonconformist' churches, which have been so influential in England. The events of 1662 had a big impact on Christianity in England, and eventually on Christianity around the world. What did the departure of 1760 ministers and many people mean? Why did it happen? Was it the end of Reformed theology and practice within the Church of England? What happened to those who left? What impact did these events have on gospel ministry to the nation? Decisions made in 1662 cast long shadows, and this Lecture aims at helping us understand what happened, why it happened, what we can learn for our lives and ministries, and how to respond in similar situations today. Peter Adam served as Vicar of St Jude's Carlton, and as Principal of Ridley College in Melbourne Australia. He is currently Vicar Emeritus of St Jude's, and Canon of St Paul's Cathedral Melbourne.