When Nineveh repents, God decides to not destroy her. But Jonah is angry. Why was he so upset? We contrast Jonah's attitude with God's heart of compassion for the lost, revealed through His Plan of Salvation, not only for the people of Nineveh, but for all mankind, as demonstrated by the Cross. We also explore the connection of Jonah with the Day of Atonement and Feast of Tabernacles, confirmed by the fact that the Jews read the book of Jonah on the Day of Atonement.