"At that time Tyre will be forgotten for seventy years, the span of a king's life. But at the end of those seventy years, it will happen to Tyre as in the song of the prostitute: 'Take up a harp, walk through the city, you forgotten prostitute; play the harp well, sing many a song, so that you will be remembered.'" NIV translation
For seventy years, Tyre was to be desolate but, at the end of that time, she would once again attract business.
"At the end of the seventy years, the Lord will deal with Tyre. She will return to her lucrative prostitution and will ply her trade with all the kingdoms on the face of the earth." NIV translation
Today the city is the fourth largest in Lebanon and is a major port as well as a tourist destination. A "prostitute nation" was one that had abandoned the business principles of God and sought only the highest of profits.
This could be said of many cities and nations in the world today and speaks of the coming worldwide system of commerce.
"Yet her profit and her earnings will be set apart for the Lord; they will not be stored up or hoarded. Her profits will go to those who live before the Lord, for abundant food and fine clothes." NIV translation
There is a time that is coming when all of the riches of the earth will be brought to the lord. This will be during what is known as the Millennial Reign and all of the nations will bring their finest to Jerusalem.