The Jewish people were redeemed from Egypt by Moses, about whom our Sages said, "Moses was designated for redemption from the moment he was created." Yet Moses' role as redeemer is not limited to the exodus from Egypt; our Sages tell us he will also bring the final Redemption with Moshiach: "Moses was the first and will be the last redeemer."
The Torah expresses Moses' uniqueness with the words "Moses, a man of G-d."
The Talmud finds this description problematic. "If he is 'G-d,' why use the word 'man'? And if he is 'man,' why use the word
'G-d'?" it asks. The Talmud then goes on to answer its own question. "His lower half was 'man,' yet his upper half was G-d." In other words, Moses was a unique combination of the human and the Divine.
Accordingly, the task of Moses was to forge a connection between G-d and man, between the supernatural and the physical worlds. G-d's revelation of Himself through supernatural miracles is not enough; the ultimate goal of creation is to introduce holiness into the physical realm, where it can unite with nature and be one with it.
When the revelation of G-dliness supersedes nature, there is no true connection formed between the Divine and physical reality.
Although the world may be temporarily shaken by the display of G-d's infinite power, as soon as the miracle has ended, everything reverts to its former condition. When, however, G-d reveals Himself within the limitations of natural law, nature itself is shown to be G-dly.
This connection between natural and supernatural can only be effected by a Moses who serves as intermediary between the two, as it states in the Torah, "I stand between you and G-d." His function is to connect the Jewish people to their Source and thus produce a true bond between them.
For this reason it was necessary that Moses embody both characteristics, the human and the Divine. On one hand he is a human being, on the other, he is higher than any other person. This dual nature enables him to successfully combine the physical and the spiritual, imbuing material reality with G-dliness according to G-d's plan.
This special quality will find its ultimate expression in Moshiach, the reason why Moses is credited with bringing the future Redemption.
Moshiach's task is to complete the work begun by Moses, perfecting the unification of natural and supernatural that will characterize the Messianic era.
About the coming of Moshiach, the Torah states, "Like the days of your going out of Egypt, I will show you wonders." The miracles of the final Redemption will make the miracles that occurred in Egypt pale by comparison -- demonstrating to the entire world that nature is also G-dly.
Adapted from the Rebbe's Sefer HaSichot, 5751