John Dunn was an engineer who lived in Sydney and ran a consultancy company specializing in the design of trains and trams. He was the author of several engineering publications as well as numerous biographies, study notes and commentaries on the Scriptures. He was a member of St Paul's Anglican Church in Chatswood, New South Wales. After a battle with motor neuron disease, John went to be with his Lord on 30 December 2012.