Jonah 3:3-5

3:3 So Jonah went immediately to Nineveh, as the Lord had said. (Now Nineveh was an enormous city – it required three days to walk through it!) 3:4 When Jonah began to enter the city one day’s walk, he announced, “At the end of forty days, Nineveh will be overthrown!”

3:5 The people of Nineveh believed in God, and they declared a fast and put on sackcloth, from the greatest to the least of them.