Jeffro
Of course the Bible never mentions 70 years of exile at all.
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False, the Bible clearly and unequivocally describes the 70 years as a Period of Exile or as many historians describe this period of Jewish History as the 'Exilic period'. Refer Rainer Albertz.
Biblical texts that describe the 70 years as exilic are the following: Jer. 25:11-12; 29:10 2 Chron 36:20-23; Dan 9:1-19.
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the Jews have already returned when the 70 years ends (even though most of the Jews remained in Babylon and the 'return' in 538 BCE was actually just permission to rebuild the temple), so turning attention to their return after they've arrived is just stupid
---Nonsense. The 70 years only ended when the Jews had returned with the seventh month in 537 BCE which ended the Exile by means of the Decree of Cyrus. The date 538 BCE is bogus as you well know..
scholar JW emeritus