Every preacher hopes for results. Jonah preaches perhaps the shortest sermon in the Bible — in Hebrew just five words, no call to action, no mention of mercy — and gets the most astonishing response in the whole Old Testament. A vast foreign city, capital of the empire Israel fears most, puts on sackcloth from top to bottom. Even the king leaves his throne and sits in ashes. Even the animals fast. The prophet who did not want this to happen has become the most successful preacher he never meant to be.
Where it sits in the story: Act 3 is the story of God's people, but it was always meant to bless every nation. Here that purpose breaks the surface in the unlikeliest place — Assyria, the empire that within a few decades would destroy the northern kingdom. Jesus later holds up Nineveh's repentance as a challenge to his own hearers (Matthew 12:41), setting the stage for a gospel meant for all peoples.
What this chapter is doing: To show that God's warnings are invitations — that even Israel's worst enemies can turn, and that when they do, God turns too.
- 3:1–4 — The word comes to Jonah 'a second time,' in almost the same words. This time he goes. Nineveh is described as enormous, a three-day walk; after one day Jonah announces, 'Forty more days and Nineveh will be overthrown.' The Hebrew word for 'overthrown' can also mean 'turned around.'
- 3:5–9 — The people believe God and fast, from the greatest to the least. The king takes off his robe, sits in ashes, and decrees that people and animals alike fast, wear sackcloth, and turn from violence — 'Who knows? God may relent.'
- 3:10 — God sees them turn from their evil ways and relents from the disaster he had threatened. The city is 'turned around' after all — just not the way Jonah expected.
Key verse: Jonah 3:10 · So what: The king of Nineveh's 'who knows?' is a humble and honest prayer — no guarantees, just a turn toward mercy. The chapter suggests no one is too far gone to change, and that God's threats are often his way of calling people back. It also quietly asks readers whom they have decided is beyond reach.