'Ashes' in the Bible

"Alas for thee, Chorazin!" He cried. "Alas for thee, Bethsaida! For had the mighty works been done in Tyre and Sidon which have been done in both of you, they would long ere now have repented, covered with sackcloth and ashes.

"Alas for thee, Chorazin! Alas for thee, Bethsaida! For had the miracles been performed in Tyre and Sidon which have been performed in you, long ere now they would have repented, sitting in sackcloth and ashes.

For if the blood of goats and bulls and the ashes of a heifer sprinkling those who have contracted defilement make them holy so as to bring about ceremonial purity,

He reduced to ashes the cities of Sodom and Gomorrah, and condemned them to overthrow, making them an example to people who might in future be living godless lives.