'Potsherd' in the Bible

And he took him a potsherd to scrape himself therewith; and he sat among the ashes.

My strength is dried up like a potsherd; And my tongue cleaveth to my jaws; And thou hast brought me into the dust of death.

Woe unto him that striveth with his Maker! a potsherd among the potsherds of the earth! Shall the clay say to him that fashioneth it, What makest thou? or thy work, He hath no hands?