When G-d revealed to us HIS true essence at Mount Sinai we Jews were shown nothing is greater than HIM.
“Moses then proceeded to describe the revelation of G‑d at the Giving of the Torah at Mount Sinai.”
[Moses told the Jewish people that at Mount Sinai,] “You were shown in order to know that G d is the only deity. There is nothing other than Him.” Deuteronomy 4:35
The Rebbe explains: “By revealing His essence, which is beyond Creation, G‑d enabled us to transcend the limits of nature, as well. In order to overcome life’s challenges and tests, we need only remind ourselves that “there is nothing other than Him,” i.e., that nothing can constitute a real obstacle to fulfilling G‑d’s intentions, since everything, in the final analysis, is part of G‑d’s essence. Evoking this awareness elevates our Divine consciousness to the level of truly perceiving G‑d’s essence everywhere. This, in turn, serves to hasten the Messianic Redemption, when “the glory of G‑d will be revealed and all flesh will see it together.”1 Isaiah 40:5; Likutei Sichot, vol. 24, pp.