Shared ground
The passage closes with God questioning Jonah’s anger over a plant and then turning that moment into a comparison. Jonah admits he is intensely angry and insists he is “right” to feel that way. God highlights that Jonah “cared” (or had pity/concern) for something he did not make, did not work for, and could not keep alive.
God then argues from the smaller case (the short-lived plant) to the bigger case (Nineveh). Nineveh is described as a “great city” with a very large number of people who lack basic discernment (“cannot tell their right hand from their left”), and God’s concern includes “much cattle.” The book ends without Jonah’s reply, leaving God’s question to stand on its own.
Where interpretation differs (only where needed)
What “cannot tell their right hand from their left” means. Some take it as referring mainly to children (too young to know right from left), which would underline Nineveh’s vulnerability and dependence. Others take it as describing the city more broadly as morally or spiritually confused, highlighting ignorance and need for mercy.
What the “120,000 persons” counts. If “right hand/left hand” refers to children, the number may be read as counting children, implying an even larger total population. If the phrase refers to general lack of discernment, the number is more naturally read as the total count being cited.
Why mention “much cattle.” Some read it as emphasizing that God’s compassion extends beyond humans to animals. Others read it as reinforcing the scale and significance of the city (livestock as part of city life and vulnerability), without making a larger claim about animals.
Why the disagreement exists
The key phrases are brief and can be taken in more than one plain sense. The text itself does not define “right hand/left hand,” and it does not explain how “cattle” functions in the argument beyond adding weight to God’s concern.
What this passage clearly contributes
Explicitly, the text presents God’s values as broader than Jonah’s: Jonah’s compassion is triggered by personal comfort and loss, while God’s stated concern reaches a large, confused population and even the animals within the city. The open-ended ending functions as the book’s final push: it frames the main issue as a conflict of priorities—Jonah’s anger and narrow pity versus God’s expansive concern for life in Nineveh (Jonah 4:9–11).