'Sackcloth and Ashes' in the Bible

And Mordecai hath known all that hath been done, and Mordecai rendeth his garments, and putteth on sackcloth and ashes, and goeth forth into the midst of the city and crieth -- a cry loud and bitter,

And in every province, whithersoever the king's commandment and his decree came, there was great mourning among the Jews, and fasting, and weeping, and wailing; and many lay in sackcloth and ashes.