All of the above receives particular emphasis in the month of Elul of the year Hey-Tuf-Nun-Sin-Aleph, the first letter of which also forms the word "Tinasay," which has the dual meaning of "you shall be exalted" and "you shall be married" in command form. This is relevant both to the revelation and coming of Moshiach, who "shall be exalted... very high" and to the marriage of the Jewish people and G-d that will take place in the days of Moshiach. In the language of the Yalkut Shimoni: "The year in which Melech HaMoshiach will be revealed... he will stand on the roof of the Temple and say, Humble ones, the time of your Redemption has arrived."
The students of the Yeshiva are called "Temimim" because they learn "the Torah of G-d, the revealed Torah and the Torah of Chassidus temimah." The learning of the inner aspect of the Torah, with intellectual comprehension, moreover, resembles and is a preparation for the situation of the days of Moshiach, when "Israel will be extremely wise and know the hidden things and comprehend the knowledge of their creator, etc."
These students are therefore called "the soldiers of the house of David" who overcome the position of those who "revile the footsteps of your anointed." Their work reveals and brings Moshiach ben David in a way that "Blessed is G-d forever Amen and Amen."
This period (described at the conclusion of this Psalm) has already reached a conclusion after the accomplishments and work during the forty years since the histalkus of my sainted father-in-law, the Previous Rebbe, the leader of our generation. We have spread the wellsprings outward in such a way that "G-d gives to you a heart to understand and eyes to see and ears to hear," and we stand now in a period connected to Psalm 90, that concludes with the verse "May the pleasantness of the L-rd our G-d be upon us... and the work of our hands establish it." This means "the Divine Presence dwells in the work of their hands," which represents the payment for all our accomplishments and work.
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We know that "Action is the main thing" and therefore we publicize everywhere that we stand at the conclusion of our accomplishments and work ("when you go out to war against your enemies"). We are now at the beginning of the period of the payment of the reward, "payment of the reward of the righteous" ("when you come to the land... and you inherit it and you will dwell upon it"). Accordingly, one's work also has to be connected to the days of Moshiach, beginning with learning the Torah concerning Moshiach, Redemption and the Temple. This should be done with tranquillity, joy and a gladdened heart, especially through arranging gatherings of joy. [Such an approach has] particular relevance to the celebration of a wedding and the seven days of feasting (including also strengthening "the custom of Israel" to arrange a meal for the poor). This is all a preparation for the promise that "then (in the time to come) our mouths will be filled with laughter."
For the leader of this generation, my sainted father-in-law, whose second name "Yitzchak," which means laughter and rejoicing, is the eighth ("Az" (then) in gematria is eight) leader from the Baal Shem Tov. Therefore, in this generation, we will make it so that "our mouths will be filled with laughter" (not in the future tense, "then," but) in the language of the present.
(From the talk of Shabbos Parshas Teitzei, 14 Elul 5751)