Jonah 3:2-4

3:2 “Go immediately to Nineveh, that large city, and proclaim to it the message that I tell you.” 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!”