Jonah was displeased because Israel’s bitter enemy survived, but ultimately learned his lesson to be more forgiving. The Book of Jonah is read on Yom Kippur because it is a story of repentance.
The manuscript itself contains texts including the first complete epistle of Peter, the Book of Jonah, and an Easter homily. Reuters The codex was written in Coptic on papyrus around 250-350 AD ...