This discourse starts with the words of Tehillim “Open my eyes and I shall gaze at [hidden] wonders from Your Torah” (“גל עיני ואביטה נפלאות מתורתך”). This should immediately grab our attention, since the Rebbe called this year “I will show wonders” (“אראנו נפלאות”) and over the year would proceed to explain that all we need to do is “open our eyes”. In this discourse the Rebbe explains to us what this means.
The verse mentioned above has a connection with Lag B’Omer (when the maamor was originally said, and when, 14 years later, it was published in 5751). Because the word גל (“Gal” — Open [my eyes]”) contains the same letters as “Lag” B’Omer ל”ג בעומר.
Lag B’Omer is not only the day that Rabbi Shimon bar Yochai appeared (to fleshly eyes) to pass away, but it was the day of “the main revelation” of the inner dimension of Torah. As brought in the Zohar that Rashbi revealed “holy words that he had not revealed over the course of his life (because the things he revealed [at the time of his passing] were the highest matters, that even Rashbi had been afraid to reveal then prior to this.)”. Who fails to see the bold hint here — that the Rebbe, in the year before our fleshly eyes perceived 27 Adar and Gimmel Tammuz, is revealing the us (in Dvar Malchus) things which had not been revealed previously.
The Rebbe proceeds to address a simple question: if the inner dimension of Torah is concealed from us, then the request should be “reveal to me” the hidden matters. But the verse requests instead “open my eyes” — implying that the concealment is due to the eyes and not to the matters being hidden from sight.
The answer is that the Torah was given in order that we will become elevated, becoming vessels in which Elokus can be revealed. And specifically in those matters which apply “down below” (such as eating, drinking, business, etc.). In terms of “Your Torah” (to quote the posuk) this means perceiving the hidden dimension of Torah within the revealed dimension; the deep intentions (כוונות) which are enclothed in the mitzvos. In fact, the main refinement and purification of the lower beings (the main intent of the giving of the Torah, as mentioned above) takes place via the intentions of the mitzvos.
All of this is related to Rashbi and Lag B’Omer, as the other verse that contains a hint to this day is “this witness-mound of stones” (עד הגל הזה) that Yaakov Avinu built as a mechitza for Lavan that neither of them would cross. As the Rebbe explains here, this mound of stones was never meant to be permanent (as opposed to a wall, which has permanence). Rather, this mound of stones (“Tzimtzum” and concealment) was only constructed in order that Yisroel will do the work to remove it, and to reveal the inner dimension of the Tzimtzum itself. This recognition — that the Tzimtzum is really for the sake of revelation (we could say by way of a moshol: like the father who hides from his son on order that the son will search for and find him) — is the accomplishment of Rashbi, who refined this mechitza and brought about that the highest revelations could be perceived also in the lowest worlds.
This means that:
“…the seeing of the wonders of Torah should be (not only because the wonders will be revealed, but rather) because the Holy One, blessed be He, will open up the person’s eyes and the person will see the wonders of Torah in his own matters…that the Tzimtzum [the concealment which allows the dimension of “his own matters” to come into being] is really for the sake of revelation.”
In other words, the message of the year 5751, the year of “I will show wonders”, is that within matters that derive from the Tzimtzum itself, we should perceive the loftiest revelations of Elokus — in the revealed world, in the revealed dimension of Torah. And how can we possibly succeed to do that properly? By diligently laboring to understand this dimension of Torah, and asking Hashem to please “Open my eyes…”!