Rabbi Cunin: "They will understand and see that the Rebbe runs the world and will take us out of golus".
בתניא אגה"ק ביאור לסי' ז"ך], "שגם בזה העולם המעשה אשתכח יתיר" [ראה תניא
שם] – בודאי שהרבי מנהיג את העולם כולו, ואנ"ש בפרט, ומעורר רחמים רבים
וכו', כמו שהי' עד עתה, ואדרבה, ביתר שאת וביתר עוז.
Since the Rebbe was someone who authored a prolific amount on the topic of Achdus Hashem, and since the Rebbe is familiar with more philosophic Kabbala than the rest of us, that alone is enough for R. Shlomo Kunin, and that is why that isn't shocking.
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The long answer is that Kabbala has all sorts of forces "running the world", with the innovative distinction that they are b'achdus with Hashem; this is in fact what Kabbala is mostly here to accomplish: to define the status of the ייחוד various עולמות and ספירות. There are some who lose sight of the point, and get involved in lengthy pilpulim on the exact "direction" זרועות דאריך אנפין are facing; that may have importance, but the essential point of Kabbala remains the gauging of the increasing unity of the material and then spiritual forces the closer G-d is approached.
But while that certainly suffices for someone who is familiar with Kabbala and it's ideas (and not only strictly it's technicalities), I'll note for now an explicit source which deals specifically with people running the world. It is from a famous letter penned by a leading disciple of the Maggid of Mezerich, R. Mendel of Vitepsk.
At the moment I don't have a copy of the entire letter, but I'll provide that as soon as I get a copy of Pri Ha'aretz.
R. Mendel had received a letter requesting that he bestow the author with children. R. Mendel replied that he doesn't control the world, although the Baal Shem Tov did:
היה דבר ה' ביד הבעל שם, ויגזור אומר ויקם. אחד היה, ומהקדמונים לא קם
כמוהו, ואחריו לעפר מי יקום.
that translates roughly, "I am throughly embarrassed because I cannot stand in G-d's stead. The Baal Shem [could, for he] had the word of G-d in his power, and he would decree and it would be. He was unique, since the ancient there were none like him, and who could be after him?"
So R. Mendel has stated that the Baal Shem is תחת אלקים and can control the world. This actually is alluded to in the Yerushalmi (
Furthermore, the reference to דבר ה' is in fact to the עשרה מאמרות which are Kabbalistically the spiritual force upon which all existence exists. So R. Mendel has stated that the Besht's powers derived from the fact that he could manipulate the very core of existence.
While it is impossible to teach these extremely detailed concepts in the comments to a blog, I'll suffice by explaining that all normative Jewish though and philosophy is seen by Kabbala to apply only within the סדר השתלשלות
העולמות which begins with the עשר ספירות דאצילות. Whereas what is higher, for instance בחינת הכתר, has complete power of veto over any "worldly" notion.
Kabbala and Chassidus entertain the possibility of man "reaching" that level, and then they indeed may "control the world". That is peshat in the Yerushalmi.
P.S. there are more sources on the topic of התחת אלקים אני which I'll hopefully post soon.