Disillusioned JW
scholar which pages of the Insight book are you using for the data of the reigns of the Hebrew Monarachy which add up years from 539 (or 537) B.C.E. to get 607 BCE? Are you referring t the chart which is on pages 404-406 of Insight Volume 1? That chart is counting up (forward in time) from what the Insight book says happened in 1117 BCE. I don't see it counting backward in time from the well established date of 539 B.C.E. Therefore please provide us with more information so I and others can see what you are using to support your claim.
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Simple for you only have to read what is published in WT publications to understand the methodology used for the scheme for the Divided Monarchy and for the calculation of 607 BCE using the pivotal date of 539 BCE. It is not 'rocket science' that even a layperson can understand both the methodology and the overall scheme of WT chronology. Just use the Insight and Aid publications and the information in the All Scripture Inspired publication.
scholar JW