When the Beis Hamikdash is rebuilt,
bimheirah beyameinu, the laws of tumah will affect us all, since we will be required
to be tahor in order to enter the Beis Hamikdash, to eat korbanos and maaser sheini,
and in order to separate challah and terumah.
Moses, who dared to request that God change His "Attribute of Judgement" to the "Attribute of Mercy," merited having God change the ways of nature in response to his prayers, and the decree of exile was thus nullified before the appointed time.
Jerusalem’s eminence stems from its being the city of the Holy Temple, the home of the kingdom of Israel, and the Torah center of the world. In liberating Jerusalem we merited advancing toward the full revelation of the greatness of the Holy City.