Rashi on Isaiah
that Tyre shall be forgotten Since the prophet refers to her with an expression of degradation, with an expression comparing her to a harlot, he says, “shall be forgotten,” like a harlot whose lovers have forgotten her. She, too, shall be forgotten for want of merchants and traffickers turning to her, because she shall be destroyed.
Ibn Ezra on Isaiah
ונשכחת And shall be forgotten. ונשכחה ═ ונשכחת; comp. ושבה ═ ושבת And it will return (Ez. 46:17).
Rashi on Isaiah
like the days of one king The days of David were seventy years, but I do not know why this sign is given here.