O daughter of my people, gird thee with sackcloth,.... Either as a token of repentance for sin; so the king of Nineveh and his subjects did, to show their repentance, Jon 3:6 or as a sign of mourning, for the calamities coming on them, Ge 37:34and wallow thyself in ashes; or roll thyself in them, as a token of the same.
The Targum is,"cover your heads with ashes.''Make thee mourning as for an only son; which of all is the most bitter: and therefore it is added,most bitter lamentation; see Zec 12:10.