Job 2:8

8And he took aa piece of broken pottery with which to scrape himself while he sat in bthe ashes.

Jeremiah 6:26

26O daughter of my people, cput on sackcloth,
and droll in ashes;
emake mourning as for an only son,
most bitter lamentation,
for suddenly the destroyer
will come upon us.

Lamentations 3:29

29 flet him put his mouth in the dust
there may yet be hope;
Copyright information for ESV