'Haircloth' in the Bible

For this put on haircloth, with weeping and loud crying: for the burning wrath of the Lord is not turned back from us.

O daughter of my people, put on haircloth, rolling yourself in the dust: give yourself to sorrow, as for an only son, with most bitter cries of grief; for he who makes waste will come on us suddenly.

For everywhere the hair of the head and the hair of the face is cut off: on every hand there are wounds, and haircloth on every body.

Make sounds of grief, O Heshbon, for Ai is wasted; give loud cries, O daughters of Rabbah, and put haircloth round you: give yourselves to weeping, running here and there and wounding yourselves; for Milcom will be taken prisoner together with his rulers and his priests.