Jeffro
Post 1559
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. 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'.
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 need to be more thorough and use careful research. Read more widely, deeply and thoroughly!
scholar JW