Chapter 49 verse 18 has three Hebrew words that translate, “For Your salvation I wait, O Lord”.
The commentators attempt to formulate a historical explanation, locating the statement in the context of a particular period.
One can also take it as a Jewish cri-de-coeur. It says that despite all the challenges and changes that await the Jewish people, they will never give in or give up. There will come a moment when the messianic dreams will come true, when there will be no more sorrow or sighing.
Jerusalem will be the focus of the world and God’s rule will be universal.