And they shall scoff, etc.; it, or he, scoffeth at kings. The Chaldean nation makes light of the power and persons of kings. Compare Nebuchadnezzar's treatment of Jehoiakim (2 Chronicles 36:6; 2 Kings 24:1, 2 Kings 24:3; Jeremiah 22:19) and Jehoiachin (2 Kings 24:12, 2 Kings 24:15).
They shall deride every strong hold. The strongest fortress is no impediment to them. They shall heap dust. This refers to the raising of a mound or embankment for the purpose of attacking a city. In the Assyrian monuments one often sees representations of these mounds, or of inclined planes constructed to facilitate the approach of the battering ram.