Jonah 4:4

‘And YHWH said, “Do you do well to be angry?”

YHWH then asked him if he really thought that he was doing well by being angry. This is leading up to the main message of the book, that what is right is for the strong to have compassion on the weak, and it is thus right for the strong to be forgiving and merciful, and for Him to have mercy on ignorant man. (As Jonah 4:10 brings out, it is not all Assyrians who are in mind as such, but those who are helpless and weak, although that might indicate all religiously).