All ye that are about him; i.e. the neighbouring nations (setup. on Jeremiah 46:14). The invitation to condolence is not ironical, but in the deepest spirit of human sympathy, as in the parallel prophecy in Isaiah (see on Isaiah 15:5).
The strong staff; i.e. the sceptre as an image of royal authority (comp. Ezekiel 19:11-14). Rod; as in Psalms 110:2.