'Sackcloth' in the Bible

And this shall happen: There will be a stench instead of perfume, and a rope instead of a sash, and baldness instead of a well-set hairdo, and a clothing wrap of sackcloth instead of a rich robe, branding instead of beauty.

They gird themselves [with] sackcloth in its streets; on its roofs and public squares everyone wails, going down in weeping.

at that time, Yahweh had spoken by the hand of Isaiah son of Amoz, saying, "Go and loosen the sackcloth from your loins, and take off your sandals from your feet," and he had done so, walking naked and barefoot.

And the Lord, Yahweh of hosts, called on that day for weeping and mourning, and for baldness and girding {with} sackcloth.

And this happened: When King Hezekiah heard, he tore his garments, covered himself with sackcloth, and entered the temple of Yahweh.

And he sent Eliakim, who [was] {in charge of} the palace, and Shebna the secretary, and the elders of the priests {covered} with sackcloth to Isaiah son of Amoz, the prophet.

I clothe [the] heavens [with] darkness, and I {make} their covering sackcloth."

Is [the] fast I choose like this, a day for humankind to humiliate {himself}? To bow his head like a reed, and {make} his bed [on] sackcloth and ashes; you call this a fast and a day of pleasure to Yahweh?