Written in the postexilic era, probably in the fifth century B.C., this book is a didactic story with an important theological message. It concerns a disobedient prophet who attempted to run away from his divine commission, was cast overboard and swallowed by a great fish, rescued in a marvelous manner, and sent on his way to Nineveh, the traditional enemy of Israel. To the surprise of Jonah, the wicked city listened to his message of doom and repented immediately. All, from king to lowliest subject, humbled themselves in sackcloth and ashes. Seeing their repentance, God did not carry out the punishment he had planned for them. Whereupon Jonah complained to God about the unexpected success of his mission; he was bitter because Yahweh, instead of destroying, had led the people to repentance and then spared them.