Isaiah 23:15 Meaning: The Meaning of Seventy Years for Tyre
It will come to pass in that day that Tyre will be forgotten seventy years, according to the days of one king. After the end of seventy years it will be to Tyre like in the song of the prostitute.
And it shall come to pass in that day, that Tyre shall be forgotten seventy years, according to the days of one king: after the end of seventy years shall Tyre sing as an harlot.
And it shall come to pass in that day, that Tyre shall be forgotten seventy years, according to the days of one king: after the end of seventy years it shall be unto Tyre as in the song of the harlot.
And it hath come to pass, in that day, That forgotten is Tyre seventy years, According to the days of one king. At the end of seventy years there is to Tyre as the song of the harlot.
And it shall come to pass in that day, that Tyre shall be forgotten seventy years, according to the days of one king. At the end of seventy years it shall be for Tyre as the harlot's song.
Meaning in one sentence
Isaiah 23:15 means Tyre would be forgotten for 70 years, the span of a king's life or dynasty, tying their judgment to God's sovereign calendar.
Context
This verse comes near the end of a long oracle against Tyre, the great Phoenician port city known for wealth and pride. For fourteen verses the prophet has called down judgment: her ships will wail, her strongholds fall, her merchants scatter. Now the tone shifts. The destruction will not be permanent. God sets a limit: seventy years, a period known from other prophets as the length of Babylon's domination. Tyre will be forgotten, erased from the world's commerce. But only for a time that God has measured out. The verse introduces this waiting period, a sentence with an expiration date, and a strange image of a forgotten prostitute picking up her harp to sing again.
Key Words
Three Hebrew words carry the weight of this verse. First, nishkachat, a form of shakach, to forget. It is passive: Tyre will be forgotten, not by God but by the world. No merchants will remember her harbor. No ships will call. The word carries the ache of being erased from the minds of those who once depended on you.
Second, melekh echad, 'one king.' The word melekh can mean a single ruler, but in prophetic language it often stretches to mean a dynasty or kingdom, as in Daniel 7:17 where 'kings' are empires. The word echad (one) binds the period. It will feel like the reign of a single, unbroken power.
Third, zonah, the prostitute. This metaphor runs through the passage. It is not about literal sex but about Tyre's way of doing business, courting every nation for profit, selling herself to any merchant. The 'song of the prostitute' is the lure, the promise of pleasure and gain. When Tyre returns to trade, she will once again sing to attract customers.
How Christians Read This Verse
Most Christian commentators agree that the seventy years link to Jeremiah's prophecy of Babylon's dominion (Jeremiah 25:11, 29:10). But they read 'according to the days of one king' in different ways. Adam Clarke and Albert Barnes take 'king' to mean a dynasty: the house of Nebuchadnezzar that ruled Babylon for about seventy years. John Calvin sees it as a human lifespan, the ordinary span of one king's life, drawing on Psalm 90:10. The Cambridge Bible calls the meaning 'uncertain' but notes that the phrase may indicate a fixed, unchangeable order. Each reading trusts the same point: God set a definite boundary on Tyre's humiliation, anchored to the rise and fall of the Babylonian empire.
A common misunderstanding
Some readers take 'according to the days of one king' to mean that a single human king would reign for exactly seventy years. In fact, 'king' in prophetic language often means a dynasty or successive power (Daniel 7:17, 8:20). The seventy years match the duration of the Babylonian empire under Nebuchadnezzar and his successors, not one man's lifetime. The mistake can make the prophecy seem impossible, when the real meaning is about God's control over the whole political order.
Living This Out
You might feel forgotten this week. Not by God, but by people. A job application that went nowhere. A friend who stopped calling. A church that overlooked your gifts. The feeling of being shelved. This verse says God measures those seasons. He gives them a number and an end. You do not know what the number is, but you know He set it. That changes how you wait. Instead of panic, you can rest. Instead of scrambling to be noticed, you can trust the One who decides who is remembered and when. Tyre did not talk her way back into trade. God visited her (verse 17). He will visit you too.
Main takeaway: God sets a fixed time for judgment and restoration, and His plans for nations and individuals are never truly forgotten.
For Families
For ages 5, 8
God told a city called Tyre it would be forgotten for a very long time, like a time-out that lasts for many years. But God also said the time-out would end. He always knows when to start and stop.
For ages 9, 12
In this verse, God compares Tyre to a prostitute to show how the city did whatever it took to make money from other nations. The 'song of the prostitute' is the music she played to attract customers. After seventy years of being forgotten, Tyre would go back to doing business, singing the same old song. But God would still be in control of the whole thing. He let the city fall, He set the time limit, and He decided when it would start again. No matter how big or powerful a place seems, God is always the one who calls the shots.
Questions People Ask
What does 'according to the days of one king' mean in Isaiah 23:15?
Most commentators take it to mean the duration of the Babylonian dynasty, not one man's lifetime. The word 'king' in prophetic books can refer to a kingdom or succession of kings (Daniel 7:17). The seventy years match the period of Babylon's domination from Nebuchadnezzar to Cyrus.
Why does the verse mention a prostitute's song?
The metaphor compares Tyre's restored commerce to a prostitute who sings to attract customers after being forgotten. It is not about literal sex but about the way Tyre did business, courting merchants from every nation for gain. The song represents the lure of trade and profit.
Did the seventy years of Tyre's judgment really happen?
Historical records indicate Tyre was besieged by Nebuchadnezzar for thirteen years and eventually subdued. After the Persian conquest of Babylon, Tyre regained its status as a trading port. The seventy years likely align with the period of Babylonian dominance, though exact dating varies among scholars.
How does Isaiah 23:15 connect to Jeremiah's prophecy?
Jeremiah 25:11 and 29:10 also mention a seventy-year period of serving the king of Babylon. Isaiah uses the same timeframe to tie Tyre's fate to the larger pattern of God's judgment on the nations. The seventy years became a recognizable symbol for the completeness of God's appointed time.
Does 'seventy years' mean an exact number or a symbolic period?
It functions as both. The number appears in Jeremiah and Zechariah as a historical reference to the Babylonian exile. But it also carries symbolic weight, as seventy is 10 times 7, a number representing completeness. The exact length matters less than the certainty that God set a boundary.
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