'Reformed' in the Bible

'Woe to thee, Chorazin; woe to thee, Bethsaida; for if in Tyre and Sidon had been done the mighty works that were done in you, long ago, sitting in sackcloth and ashes, they had reformed;

'Men of Nineveh shall stand up in the judgment with this generation, and shall condemn it, because they reformed at the proclamation of Jonah; and lo, greater than Jonah here!