Dwelt at Nineveh - The meaning is not that Sennacherib made no more expeditions at all—which would be untrue, as his annals show that he war…

Departed, and went. — Broke up camp, and marched. There should be a stop at returned.

And dwelt at…

(See Gill on 2 Kings 19:1)

That night which followed the sending of this message to Hezekiah, the main body of their army was slain. See how weak the mightiest men are before…