This book has an almost entirely narrative content. Jonah wrote it somewhere from 785 BC to 760 BC.
In the book, Jonah is called upon by God to prophesy the judgment of Nineveh. However, Jonah tries to escape His mission and sails for Tarshish. He is eventually thrown away by the ship’s crew in the middle of the storm after he tries to appease God. Jonah is then swallowed by a whale, and he is trapped in the animal’s belly for three days and three nights. This is where he asks God to forgive Him for his disobedience.
God has the whale to spit Jonah out safely on dry land. Jonah goes to Nineveh and fulfills God’s mission to deliver the message of repentance. To his own surprise, the city turns its back from its evil ways and repents.