'Ashes' in the Bible

"Woe to you, Chorazin! Woe to you, Bethsaida! For if the mighty works had been done in Tyre and Sidon which were done in you, they would have repented long ago in sackcloth and ashes.

"Woe to you, Chorazin! Woe to you, Bethsaida! For if the mighty works had been done in Tyre and Sidon which were done in you, they would have repented long ago, sitting in sackcloth and ashes.

For if the blood of goats and bulls, and the ashes of a heifer sprinkling those who have been defiled, sanctify to the cleanness of the flesh:

and turning the cities of Sodom and Gomorrah into ashes, condemned them to destruction, having made them an example to those who would live ungodly;