There is a common thread running through almost all of the Dvar Malchus sichos of 5751-52: the concepts of “ratzo v’shov” (ascending and returning) and the influence from Above contrasted with the effort from below. These concepts are explained at great length in the teachings of Chassidus, and they receive added emphasis in Dvar Malchus.
The year this sicha was said (5751, same as this year, 5778) Shabbos parshas Chukas was the 10th of the month of Tammuz. This means it carries the influence of the number seven (Shabbos) and the number ten (10th of the month). The Rebbe explains that seven represents the complete perfection of the world as it is created from Above, exemplified by the Written Torah which was given from Above, the revealed aspect of Torah. The number ten represents the perfection that is attained (and added to) via our effort from below, which finds expression in the Oral Torah, including Pnimiyus Hatorah. The added quality of ten, deriving from our effort, is that it brings to revelation the “concealed good” which is not openly revealed in the revealed Torah.
The difference between 7 and 10 is 3, which refers to the “moichin“, the three intellectual dimensions of Chochma, Bina and Da’as (Chaba”d). It is our effort to use our intellectual abilities which brings out the hidden good. Says the Rebbe here:
To point out that last Shabbos was 3 Tammuz, the beginning of the Geulah. This Shabbos. the 10th of Tammuz, comes after 7 days of the week have passed–the avodah of refining the 7 midos. Together with this is the avodah of the 3 moichin (of 3 Tammuz)–and this brings about the revelation of the aspect of 10 (of Tammuz)…
This is the special quality of our effort (3 [moichin]) which adds to the completeness from Above (7 [midos]) and brings to the ultimate completeness and perfection of revealing the hidden good (10). [This is also connected with our parsha which speaks of the Red Heifer (Para Adumah), in which the Torah instructs that the sprinkling of the purifying waters take place on the third day and the seventh day.] The Rebbe explains further: “through understanding Pnimiyus Hatorah and the soul of the matter, one is able to see there also the hidden good, even though one does not see this revealed, or one even sees the opposite (the opposite of good).” According to Torah (and emphasized in Chassidus), everything is really good because nothing evil descends from Above. But in order to see this we need the aspect of “3”–our effort in using our 3 intellectual faculties to understand Pnimiyus Hatorah. The revelation of Pnimiyus Hatorah is the inyan of the three lands of Eretz Yisroel that will be inherited in the future: the lands of the Keni Kenizi and Kadmoni.
All of this is assisted by seeing the Rebbe’s face:
The revelation of Pnimiyus Hatorah is drawn down in an ongoing, perpetual way (since the time of the geulah [of the Previous Rebbe in 5687-1927])–via the Previous Rebbe’s students and the students of his students, as he is the Nosi of our generation, and “the Nosi is everything”–he gives the ability to every Jew in this generation, and particularly via his students who merited to see him with eyes of flesh, face to face…and seeing the face of the Tzaddik and the Nosi of our generation has an effect on those who see him, until it becomes firmly recognizable in them that they saw him, including first and foremost–in their avoda in “your wellsprings will spread outward”.
Since the period of time in which we find ourselves is characterized by things which appear to be the opposite of good (most strikingly the event of 3 Tammuz, which marks an interruption of seeing the Rebbe “with eyes of flesh, face to face”), we must implement the Rebbe’s instruction to make an effort to understand these things according to Pnimiyus Hatorah and in that way reveal the hidden good, which itself brings about open and revealed good in the world.