Charles Ellicott Commentary Jeremiah 51:29

"And the land trembleth and is in pain; for the purposes of Jehovah against Babylon do stand, to make the land of Babylon a desolation, without inhabitant." — Jeremiah 51:29 (ASV)

And the land shall tremble and sorrow. —The verbs in the Hebrew are in the past tense, the prophet seeing, as it were, the very event which he portrays passing before him in his vision.