Albert Barnes Commentary Isaiah 23:17

"And it shall come to pass after the end of seventy years, that Jehovah will visit Tyre, and she shall return to her hire, and shall play the harlot with all the kingdoms of the world upon the face of the earth." — Isaiah 23:17 (ASV)

The Lord will visit Tyre - He will restore her to her former wealth and magnificence.

And she will turn to her hire - The word ‘hire’ here denotes the wages or reward that is given to a harlot; and the idea which was begun in the previous verses is here continued—of Tyre as a harlot—frivolous, splendid, licentious, and having dealings with strangers and foreigners. The gains of that commerce with other nations are here represented as her hire.

And will commit fornication ... - She will again be the mart of commerce (Isaiah 23:3); she will have contact with all the nations, and derive her support, splendor, and luxury from them all. The idea is that she would be restored to her former commercial importance, and perhaps, also, the prophet intends to imply that she would obtain those gains by dishonest acts and fraudulent pretexts.

After the destruction of Tyre by Nebuchadnezzar, it remained desolate until the close of the Babylonian monarchy. Then a new city was built on the island, which soon rivaled the former in magnificence. That new city was besieged and taken by Alexander the Great on his way to the conquests of the East.