Jonah was in the fish – in the deep parts of the earth for three days. He comes out, and a nation repents.
Jesus was in the deep parts of the earth too – for three days, He was dead – no more alive than Jonah.
He comes out, and a world repents.
Jonah foreshadowed Jesus. Unlike Jonah, Jesus desires our salvation -no matter how wicked we are or who we have hurt.