Albert Barnes Commentary Jeremiah 36:29

"And concerning Jehoiakim king of Judah thou shalt say, Thus saith Jehovah: Thou hast burned this roll, saying, Why hast thou written therein, saying, The king of Babylon shall certainly come and destroy this land, and shall cause to cease from thence man and beast?" — Jeremiah 36:29 (ASV)

The king of Babylon ... - These words do not prove that Nebuchadnezzar had not already come, and compelled Jehoiakim to become his vassal. The force lies in the last words, which predict such a coming as would make the land utterly desolate: and this would be the result of the king throwing off the Chaldaean yoke.