Some years ago we shared and posted a glimpse into the Chassidic teaching of “A Shofar-Less Rosh Hashanah when it falls on Shabbos”. See that post for a little of the deep dive into why we don’t blow Shofar on a Rosh Hashanah that falls on Shabbat, and how Shabbos (and what it represents) fills in for Shofar (and what it accomplishes on Rosh Hashanah) on a mystical cosmic level. See that post for more on that.

This year, 5787/2026, friends and colleagues have been sharing a talk from the Rebbe at the end of 5749, just before Rosh Hashanah 5750/1989 (when Rosh Hashanah fells on Shabbos). That 1989 talk goes through a lot of the same Chassidic teaching on how Shabbos fills in for Shofar, and how both Shabbos and Shofar share certain inner dimension spiritual functions. So the start of the concept is pretty much the same.

But then the Rebbe asks a question: Even if Shabbos fills in for Shofar, it’s not the same. Because Shofar is a human effort and avodah, it is a deep calling from below. Whereas Shabbos is set and designated from heaven. How does Shabbos fill in for that human yearning of Shofar?

This talk of the Rebbe explains Shabbos and Shofar as both expressing our Bittul, our selfless, self-transcendent rising to connect with G-dliness. Shofar is an active, loud, bold expression of that Bittul. It cries out from the essence, it transcends words and transcends self.

But a Shofar-less Shabbos is not just passive. It’s not blank. Shabbos observance in general, and especially a Shabbos Rosh Hashanah, says the Rebbe, is also an act of Bittul, a declaration of transcendence and deep core connection. But it does so noiselessly, it does so action-less. It is more of a Bittul of the deepest essence.

Perhaps Shofar can be compared to a core emotional call, a heartfelt expression, between spouses or between children and parents. And Shabbos is like that knowing look, that subtle but unmistakable gleam in the eye, that telepathic understanding and connection where nothing at all needs to be said.

The Talmud tells us that when it comes to biblical mention of the Shofar on Rosh Hashanah, the Torah speaks both of “the sound of the Shofar”, and the “memory of the Shofar.” There is a Shofar connection that has sound, and a sound-less Shofar connection that is as subtle and silent but as real as a memory.

It takes a lot to get to, to reach, that deep knowing place, where so much is said without a word, where so much is heard without a sound. And that is the Avodah, the great service and initiative of the Jewish people on a Shabbos Rosh Hashanah!