Jonah 3:10

And God saw their works, that they turned from their evil way, from the security of their open transgressions of the Lord's will; and God repented of the evil that He had said that he would do unto them; and He did it not, letting His mercy guide His actions rather than a stern and immutable justice. As God spared Nineveh when its inhabitants turned to Him in repentance, so He is ready to show mercy to all those who lay aside their obstinate impenitence and plead with Him for forgiveness.