Alan F
Your opinion that there is no evidence for 607 is plainly stupid. The date is based upon the established fact by means of astronomical records and other secular material for the fall of Babylon. The historic fact of the return of the Jewish exiles to their homeland after the 70years is attested to in scripture. Finally, the desolation of Jerusalem under Nebuchadnezzer is confirmed by scripture and secular history. These facts are not the imagination of the Society. The 'devil is in the detail' and what a complex period of Judean history this is. The plain facts are that this watershed in Jewish history is the the subject of much controversy within contemporary scholarship.
It is dishonest to say that because the society has a methodology of computing these principal stages of history that differs from other approaches that it is without any foundation. The very fact that scholars cannot agree as to 587 or 586 is cause for grave concern. If the Society is so wrong and if the Jonsson hypothesis is so correct then why if the evidence is so compelling, so abundant and incontrovertible that there exists thi uncertainty. Jonsson asserts 587 over 586 which he triflys deals with this point by means of a footnote 15 on page 293 in his latest work. Interestingly, in his previous supplement to GTR published in 1989, he deals with this difficult issue with 7 pages. Jonsson omits to mention that David Freedman the editor in chief of the Anchor Bible Dictionary has in that reference work, 586 for the Fall of Jerusalem.
Uncertainty about this matter is also highlighted by the comment made by Prof. Jack Finegan a supporter of 586 that "the highly probable date of the final fall of Jerusalem - July 18, 586 BCE". {Handbook of Biblical Chronology,1998,p.259]
Jonsson and yourself assert that the discrepency arises from the biblical data with the 18th or 19th year of Nebuchadnezzer. This is misleading, your error lies in the assumptions that you have made concerning that data. The relevant texts possess their own integrity but the assumptions made on these texts are entirely speculative.
Jonsson devotes a considerable portion of his book to an exegesis of the seventy years. He is to be commended for this pioneering attempt as there is a serious lack of scholarship in this regard. His discussion of this period is unsatisfactory but it is a useful analysis. I venture to say that there is need for a thesis to be undertaken on this subject that would need to be far more thorough than what has so far appeared in scholarly journals.
scholar