This book explains with great detail the Chronology of Ezra 7 which is when the decree to rebuild Jerusalem took effect , the fulfillment of prophecy made by Isaiah and the fulfillment during the time of Ezra . This edict help us to understand the beginning of the 70 weeks prophecy and the 2300 days . This is the only book that I know that deals with these dates .All the speculation of futurists and preterits makes no sense when these days can be proven from history .After reading this book , the theory of the "last seven years " the "rapture " make no sense