21. In what way is Tyre “forgotten,” and for how long?

²¹ Isaiah goes on to prophesy: “It must occur in that day that Tyre must be forgotten seventy years, the same as the days of one king.” (Isaiah 23:15a) Following the destruction of the mainland city by the Babylonians, the island-city of Tyre will “be forgotten.” True to the prophecy, for the duration of “one king”​—the Babylonian Empire—​the island-city of Tyre will not be an important financial power. Jehovah, through Jeremiah, includes Tyre among the nations that will be singled out to drink the wine of His rage. He says: “These nations will have to serve the king of Babylon seventy years.” (Jeremiah 25:8-17, 22, 27) True, the island-city of Tyre is not subject to Babylon for a full 70 years, since the Babylonian Empire falls in 539 B.C.E. Evidently, the 70 years represents the period of Babylonia’s greatest domination​—when the Babylonian royal dynasty boasts of having lifted its throne even above “the stars of God.” (Isaiah 14:13) Different nations come under that domination at different times. But at the end of 70 years, that domination will crumble. What will then happen to Tyre?

22, 23. What will happen to Tyre when she comes out from under Babylonian domination?

²² Isaiah continues: “At the end of seventy years it will happen to Tyre as in the song of a prostitute:

²³ Following the fall of Babylon in 539 B.C.E., Phoenicia becomes a satrapy of the Medo-Persian Empire. The Persian monarch, Cyrus the Great, is a tolerant ruler. Under this new rulership, Tyre will resume her former activity and try hard to regain recognition as a world commercial center​—just as a prostitute who has been forgotten and has lost her clientele seeks to attract new clients by going around the city, playing her harp and singing her songs.

Isaiah 23:15b