Turns out it is a very detailed book about Orville and Wilbur Wright
This is a page turning and compelling read for anyone interested in the engineering and science behind the flights. It is just a wonderful book.
The book describes in detail how the brothers developed the plane, measured lift, designed propellers, and other parts all in a methodical and surprisingly scientific way - using things such as their wind tunnel. Also surprisingly they made their own light-weight gas motor. Lots of pictures from the Wright family archives .It is all quite fascinating.
Their father was a bishop .... .... but the publishers blew it by using it as the book title .... at first glance you would think it was a religious book instead of aviation history and for that reason it did not sell very well ..... I chanced across it at a flea market ... one of my favorite aviation books.