Albert Barnes Commentary Jeremiah 25:13

"And I will bring upon that land all my words which I have pronounced against it, even all that is written in this book, which Jeremiah hath prophesied against all the nations." — Jeremiah 25:13 (ASV)

The Septuagint places a full stop after “book” and takes the rest as a title, “What Jeremiah prophesied against the nations,” which series immediately follows there. In the Masoretic Text, this series is deferred to the end (Jeremiah 46–49) and, with Jeremiah 50–51, forms one entire series. Other reasons make it probable that the Septuagint has preserved for us an earlier text, in which all direct mention of the king of Babylon is omitted, and the 70 years are given as the duration of Judah’s captivity, not of the Babylonian empire. The fuller text of the Masoretes is to be explained by the dislocation that Jehoiakim’s scroll evidently suffered.