Jonah 3:4; Jonah 3:10

4 Then Jonah began to go through the city one day's walk; and he cried out and said, "Yet forty days and Nineveh will be overthrown."

10 When God saw their deeds, that they turned from their wicked way, then God relented concerning the calamity which He had declared He would bring upon them. And He did not do it.