https://www.btstories.com/jonah-the-fish/

The Lord said to Jonah the prophet, “Leave right now and go to Nineveh. You’re to tell them I’m going to judge them because of their wickedness.”

Jonah knew that God was merciful and would forgive Nineveh if they repented. He didn’t want that, so he ran away from God’s will and went to the seaport town called Joppa. He bought a ticket and got on a ship going to Tarshish. He wanted to get far away from God’s will so there would be no possibility of Nineveh’s repenting.