Shared ground
Jonah 3:7–9 presents Nineveh’s response as organized and public. A citywide proclamation, backed by the king and nobles, calls for an extreme fast and visible mourning. The text frames this as a crisis response meant to signal humility and urgency.
The decree is not only about outward signs. It explicitly requires people to “cry mightily” to God and to away from “evil” and “violence.” The passage also stresses uncertainty: the leaders do not claim they can control the outcome. They hope, without presuming, that God might “turn” from fierce anger so the city does not perish.
Where interpretation differs
Why include animals. Some read the commands about animals as straightforwardly literal: the whole city’s life—people and livestock—participates in the fast and mourning to show total distress. Others think the animal language is rhetorical exaggeration to underscore how sweeping the repentance is, even if not carried out in full detail as stated.
What it means that God “turns/repents.” Many readers take the language as describing a real change in God’s action toward Nineveh (from destroying to sparing) in response to their change. Others emphasize that the change is in God’s dealings, not in God’s character: the passage describes God withholding announced judgment when people abandon violence.
Why the disagreement exists
The decree uses broad, dramatic language (including animals) and reuses the same “turn” idea for human behavior and for God’s response. Readers differ on whether that shared wording is mainly literal description, dramatic emphasis, or a way to speak about God’s actions in human terms.
What this passage clearly contributes
It portrays repentance as both public and concrete: visible mourning, urgent prayer, and a real shift away from harmful actions, especially violence. It also shows a posture of humility about outcomes—“who knows?”—while still taking responsibility to change. Finally, it connects human turning with the hope (not a guarantee) that God may also turn away from judgment (cf. Jonah 3:10).