God sent a fish to deliver Jonah Fourth cent. mosaic from Galilee

Jonah refuses to go to Nineveh, although God tells him to warn Nineveh of God's anger.  Instead, Jonah goes to sea and when a storm arises, Jonah is thrown overboard. God sends a fish to save Jonah, and Jonah responds with a psalm of thanks that God had delivered him (Jonah 1-2).  Reluctantly, Jonah goes to Nineveh and warns the people of coming destruction.  All the people promptly repent in the hope that God will spare the city. God decides to save the city and Jonah is angry (despite the fact that earlier God had saved Jonah). Jonah shows more concern for a plant that shades him than he does for the inhabitants of Nineveh (Jonah 3-4).

Jonah 1:1-17 - Jonah and the fish
Jonah 3:1-10 - Call to repent