https://www.btstories.com/jonah-the-vine/

Once again, God said to Jonah, “Leave right now and go to Nineveh. You’re to tell them I’m going to judge them because of their wickedness.” This time, Jonah immediately got up and went to Nineveh.

The city of Nineveh was extremely large. It took three days to walk from one side to the other. So Jonah started his walk across the city. He shouted, “God is going to destroy this city in 40 days!”