Charles Ellicott Commentary Jeremiah 28:2

"Thus speaketh Jehovah of hosts, the God of Israel, saying, I have broken the yoke of the king of Babylon." — Jeremiah 28:2 (ASV)

I have broken the yoke ... —The word is obviously used with special reference to the symbol which Jeremiah had made so conspicuous (Jeremiah 27:2). With some ironical repetition, it may be, he reproduces the very formula with which the true prophet had begun his message. He, too, can speak in the name of the Lord of Sabaoth, the God of Israel.