What role did the prophet Jonah play in the Bible and how did his story impact the people of Nineveh?

The prophet Jonah in The Bible was sent by God to warn the people of Nineveh about their wicked ways. Initially reluctant, Jonah eventually delivered the message, and the people of Nineveh repented, leading to their salvation. Jonah's story serves as a lesson about obedience to God and the power of repentance.