'scholar' lied:
Nonsense, Jeremiah 1:1 clearly shows that this letter was sent to an already exiled people and that all of the people in exile had to remain in Babylon until the seventy years finished.
Jeremiah 1:1 shows no such thing:
1 The words of Jeremiah the son of Hil·ki'ah, one of the priests that were in An'a·thoth in the land of Benjamin;
Additionally, Jeremiah 29:1 proves your statement to be a lie, because if there was no one living in Jerusalem after they were all exiled, Jeremiah could not have sent his letter from Jerusalem. Obviously, Jeremiah 29:10 refers to a period prior to a complete exile of Jerusalem, and there is no mention in the bible anywhere whatsoever about the Jews remaining in Babylon for 70 years. This was the exile that included Ezekiel, and telling that bunch that they would only be in Babylon 70 years would be a cruel lie.
The context proves that their servitude was located in Babylon and was not for Babylon which could be argued that their servitude was not the case but they were simply under Babylon's domination. Therefore, the translation 'at Babylon' is the more accurate rendering rather than the apostate 'for Babylon'.
The context proves no such thing. The context was in reply to claims by Hananiah that "the yoke of Babylon" would be destroyed in 2 years, but Jeremiah points out that Babylon would be in power for a total of 70 years, in harmony with Jeremiah 25:12. Nothing in the context specifies the 70 years as referring to a period of exile, and to do so would be to invalidate the response to Hananiah's claim and Jeremiah's own words at 25:12, and would require a period that ended prior to the actual fall of Babylon in 539 or the subsequent return of the Jews in 538, because the alleged 70 years, if it began from Jerusalem's destruction, had not yet even started.
Jeremiah 25:11 definitely states that the seventy years was a period of servitude of Judah along with the nations, was a period of desolation of the land and a period of exile. This verse and the context proves all the principal factors namely: exile-servitude-desolation were of the seventy years. The nations merely had to serve Babylon during the course of Judah's seventy years of exile-servitude and desolation of the land.
You can make all the bold claims you like. The scriptures say no such thing. They say that "these nations will have to serve the king of Babylon seventy years"; there is no mention of exile, and no implication of special application to the Jews.