Jonah 3:2-5

“Arise, go to Nineveh the great city and proclaim to it the proclamation which I am going to tell you.” So Jonah arose and went to Nineveh according to the word of the LORD. Now Nineveh was an exceedingly great city, a three days’ walk. 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.” Then the people of Nineveh believed in God; and they called a fast and put on sackcloth from the greatest to the least of them.