Jonah 3:3-6

So Jonah obeyed the LORD and got up and went to Nineveh. It was a very large city; just to walk across it took a person three days. After Jonah had entered the city and walked for one day, he preached to the people, saying, “After forty days, Nineveh will be destroyed!” The people of Nineveh believed God. They announced that they would fast for a while, and they put on rough cloth to show their sadness. All the people in the city did this, from the most important to the least important. When the king of Nineveh heard this news, he got up from his throne, took off his robe, and covered himself with rough cloth and sat in ashes to show how upset he was.