The chapter opens with a lament addressed to the ships of Tarshish: Tyre has been destroyed, with no houses and no harbor left. The news reaches them from the land of Cyprus, so the sailors learn of it on the way home. The people of the coast fall silent, and Sidon, the sister city that grew rich from the merchants of the sea, is told to be ashamed. Egypt is also anguished at the report, because its grain and the harvest of the Nile had fed Tyre's trade.
The central question comes in vv. 8-9: who planned this against Tyre, the city that handed out crowns and whose merchants were princes? The answer is that the Lord of hosts planned it, to bring low the pride of all glory. He stretched out his hand over the sea and shook kingdoms. The people are told to flee to Tarshish, and Sidon, drained of strength, will find no rest even in Cyprus. Verses 13-14 recall the fate of the land of the Chaldeans, which Assyria turned into ruins, and repeat the lament for the ships of Tarshish.
Verses 15-18 add a turn. Tyre will be forgotten for seventy years, a span like the days of one king. Then the Lord will visit her and she will return to her trade, pictured as a prostitute who goes back to her wages and deals with all the kingdoms. But the ending is surprising: her profits will be devoted to the Lord. They will not be stored up but will provide food and fine clothing for those who live in his presence.