Shake thyself from the dust; arise, and sit down, O Jerusalem: loose thyself from the bands of thy neck, O captive daughter of Zion.
Shake thyself from the dust - the seat of mourners (Job 2:12-13).
Arise, and sit down - namely, in a more dignified place: on a divan, or a throne (Lowth), after having shaken off the dust gathered up by the flowing dress when seated. on the ground; or simply, 'arise, and sit erect' (Maurer).
Loose thyself from the bands of thy neck - the yoke of thy captivity.