Jonah wanted to control the result of the story and wanted to see this evil nation perish because of their sins.  However, God has decided to forgive the Ninevites because of their confession and repentance of their sins towards the Lord.

This passage shows the importance of believers obeying God’s command to go to the place where He is directing us to go, preach the Good News and leave the results up to God

Jonah was called by the Lord to reach out and preach to the Ninevites to turn away from their sins and evil ways.