We are G-d’s “workers”. G-d pays us every time we do a Mitzvah – every Mitzvah brings revelation of G-dliness into the world. The ultimate reward is in the Redemption, when He will be fully revealed in the world. We also need the Redemption in order to do G-d’s work in the best way. Then we won’t have any negative situations like war, sickness or hunger, which hinder our service of G-d. We will also be able to fulfill all the commandments, including those that apply to the Land of Israel and the Beis Hamikdash (Holy Temple). And we and everything in the world will be refined, so the Mitzvos that we do using things in the world will be in the ultimate perfection.
In addition to the Redemption being necessary in order to do the work of serving G-d, it will also be a reward – not only spiritual reward but also physical abundance, as a result of G-d’s infinite light being revealed in the world.
(See talk of the Lubavitcher Rebbe King Moshiach Shlita, Seitzei 5751 (1991))
