This is in the new Isaiah book Volume 1, page 253.
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21 Isaiah goes on to prophesy: (quotes Isa 23:15a) Following the destruction of the mainland city by the Babylonians, the island city of Tyre will "be forgotten". True to the prophecy, for the duration of "one king" - The Babylonian Empire - the island city of Tyre will not be an important financial power. Jehovah, thru Jeremiah, includes Tyre among the nations that will be singled out to drink the wine of his rage. He says: (quotes part of Jer 25:11)(Jer 25:8-17,22,27) True, the island city of Tyre in not subject to Babylon for a full 70 years, since the Babylonian empire falls in 539 BCE. Evidently, the 70 years represents the period of Babylonia's greatest domination- When the Babylonian royal dynasty boasts of having lifted its throne even above "the stars of God" (Isa 14:13) Different nations come under that domination at different times. But at the end of 70 years, that domination will crumble. What will happen to Tyre?
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Para 22, 23 goes on to imply that the 70 years finishes at 539 BCE.
Considering that the society has for the last 120 years made the 70 years in Jer, Isa, Zech, Dan and 2 Chr refer to the same thing, me thinks that "new light" on the 70 year prophecies in Jeremiah are on the way considering they've changed the interpretation of Isa 23:15.
From AK