1. When Moshiach comes the world will be covered with the knowledge of G-d as the water covers the sea bed. We will know all the great secrets of the Torah. These secrets are the inner teachings of the torah which we call Chassidus. The person from where the wellsprings of these teachings come from in our days is the Rebbe.
2. He fights for the wholesomeness of the Torah. The Rebbe fights that the Torah should be learned and fulfilled in full without any compromises. The Rebbe instituted the study of the Rambam's Mishna Torah in order that every Jew should learn the entire Torah. As the Rambam says that by learning the Mishna Torah you can know the whole entire Torah, since it encompasses all of the laws applicable now and during the times of the temple. (As well as the laws of the identity of Moshiach).
3. The Rebbe fights for the wholesomeness of the Jewish people. A Jew is someone who is born to a Jewish mother of converted according to the halacha.
4. He fights for the wholesomeness of the Land of Israel. The Rebbe is always outspoken about not giving away any land because the Land is a gift form G-d to the Jewish People. Also, the vital importance of security of the land of Israel.
5. Many of the false want to be Messiahs and many of the well-meaning but confused Rabbis of today keep insisting and convincing other naive Jews that they have to drop everything and run fast to the Land of Yisrael. This is a sign of falsity and nonsensical hysteria. The Rebbe is quite different in this regard. The Rebbe tells us that Moshiach is coming therefore build where you are now. Make the land you are in a Land of Yisrael, a land that wants to do the will of Hashem. This is a true sign of a real Moshiach. He doesn’t' create hysteria, panic and fear but on the contrary he creates earning for the Geuala, positive energy for the Geuala, Torah and mitvos to bring the Geuala.
6. The Rebbe is associated with 770 which is the gematria of the house of the Moshiach.
7. The Gemmara says that Moshiach's name is Menachem.
8. The Rebbe told us the leader of the generation is Moshiach and to learn the Torah of the leader of the generation in Likkutey Sichos. Likkutey Sichos is the Torah of the Rebbe,
9. The Rebbe is the one Jewish Leader in the world who cares about every single Jew and in every single community. He sends his emissaries all over the world to bring the redemption to the Jewish people and world by spreading the 7 laws of Noach. Such an undertaking has never been done before in the history of the world.
10. The saying that the Rebbe approved of... Yechi Adonenu Marenu V'Rabenu Melech HaMoshiach Leolam Voed. !!! Long Live the Rebbe King Moshiach!!!
There are so many other reasons but we'll have to stop for now because we are counting until 10 today.