It has been previously noted that it is not enough to intend to unify one’s own soul with G‑d through the performance of Torah and mitzvot; one must also seek to unite the source of all the souls of Israel with the infinite Ein Sof-light.
In point of fact, there is quite a difference between these two intentions. A Jew’s personal desire to cleave to G‑d because of his love for Him is surely an utterly truthful intention: since his love of G‑d is sincere, his desire to cleave to Him is likewise sincere.
However, for a Jew to sincerely desire that his performance of Torah and mitzvot connect the source of all the souls of Israel with the infinite Ein Sof-light (i.e., that it effect the union of Kudsha Brich Hu and His Shechinah, as explained above), — this presupposes a far greater love of G‑d: a love so fierce that his only desire is to cause G‑d pleasure through his actions, thinking of himself not at all. It is thus entirely possible that this general intention is not completely genuine.
Now we are constantly taught that one should be wary of spiritual intentions which outstrip one’s current spiritual pace: spirituality must be earned in an environment of honesty. How, then, are we to expect that every Jew study Torah and perform mitzvot for the sake of uniting all of Israel with G‑d, when he himself knows that he does not mean it wholeheartedly?
The Alter Rebbe therefore goes on to explain that although an individual may not be entirely sincere in this intention, his integrity is not compromised thereby. For every Jew desires to fulfill G‑d’s Will — and uniting Jews with G‑d is surely His Will.
One should therefore not be apprehensive about his own sincerity to the point that he refrains from this comprehensive intention of unity, for to a certain degree his intention is consciously sincere. Moreover, there is no self-delusion here, for this unity is what his soul desires.
ואף שלהיות כוונה זו אמיתית בלבו, שיהיה לבו חפץ באמת יחוד העליון הזה, צריך להיות בלבו אהבה רבה לה׳ לבדו
And although in order that this intent should be sincere in his heart, so that his heart should truly desire this Higher Union, uniting all Jewish souls with their source in G‑dliness, his heart must harbor a great love (ahavah rabbah) for G‑d alone,
Often, loving another is ultimately a result of self-love: a person loves that which is good for him. The same is true with regard to loving G‑d and desiring to cleave to Him through the study of Torah and the performance of mitzvot: the individual desires his own welfare, and that which will benefit his own soul — and there can be no better way of achieving this than by cleaving to G‑d.
If, however, he is to truly desire the unification of all Jewish souls with their source in G‑d, a much deeper love is required: a love untainted by the faintest vestige of self-interest, a love wholly and exclusively directed toward G‑d,
לעשות נחת רוח לפניו לבד ולא לרוות נפשו הצמאה לה׳
to do what is gratifying to Him alone, and not for the purpose of quenching his soul’s thirst for G‑d,
אלא כברא דאשתדל בתר אבוי ואמיה, דרחים לון יתיר מגרמיה ונפשיה כו׳ כמו שנתבאר לעיל בשם רעיא מהימנא
but he must be “like a son who strives for the sake of his father and mother, whom he loves more than his own body and soul,…” (as explained above in ch. 10, citing Ra‘aya Mehemna),
As explained above, this degree of love was experienced by Moses, who sacrificed himself utterly in order to secure the unification of the Jewish people with G‑d. His love was similar to that of a child who is ready to give his very life for his parents‘ sake. How, then, can every Jew be expected to summon up this lofty level of love, which is a prerequisite for the desire to unite all Jewish souls with their G‑dly source?
מכל מקום יש לכל אדם להרגיל עצמו בכוונה זו
nevertheless, every person should habituate himself to this intent.
כי אף שאינה באמת לאמיתו לגמרי בלבו שיחפוץ בזה בכל לבו
For though it may not be in his heart in perfect and complete truth, so that he should long for it with all his heart, for in order to truly do so one must have attained a totally selfless love for G‑d,
מכל מקום מעט מזעיר חפץ לבו בזה באמת, מפני אהבה הטבעית שבלב כל ישראל לעשות כל מה שהוא רצון העליון ב״ה
nevertheless, to some small extent, his heart genuinely desires it, because of the inborn love in every Jewish heart to do whatever is the Supernal Will of G‑d.
ויחוד זה הוא רצונו האמיתי
And this union — the union of the source of all Jewish souls with the infinite Ein Sof-light — is His true desire,
והיינו יחוד העליון שבאצילות, הנעשה באתערותא דלתתא על ידי יחוד נפש האלקית והתכללותה באור ה׳ המלובש בתורה ומצות שעוסקת בהן
namely, the Supernal Union in the World of Atzilut, which is produced by an arousal from below, through the divine soul’s union and absorption in G‑d’s light that is clothed in the Torah and the commandments in which it is engaged,
והיו לאחדים ממש, כמו שכתוב לעיל
so that they — the divine soul and G‑d — become One in reality, as has been explained above. And thus one effects the union in the World of Atzilut.
כי על ידי זה מתיחדים גם כן מקור התורה והמצות, שהוא הקב״ה, עם מקור נפשו האלקית, הנקרא בשם שכינה
For by reason of this, the source of the Torah and the commandments, i.e., the Holy One, blessed be He, is united with the source of the individual’s divine soul, which is called ‘Shechinah’.
שהן בחינת ממלא כל עלמין ובחינת סובב כל עלמין, כמו שכתוב במקום אחר באריכות
Expressed in terms of the different levels of supernal illumination, these are the categories of “filling all worlds” and of “encompassing all worlds,” as is explained elsewhere at length.
In summary: Since all Jews desire to do G‑d’s Will, and He desires that their souls all unite with their source, there is a measure of truth in a Jew’s intent to bring about this union, even if his love of G‑d is not completely selfless.