Albert Barnes Commentary Jeremiah 25:11

"And this whole land shall be a desolation, and an astonishment; and these nations shall serve the king of Babylon seventy years." — Jeremiah 25:11 (ASV)

Seventy years - The duration of the Babylonian empire was really a little short of this period. But the 70 years are usually calculated down to the time when the Jews were permitted to return to their country .