We Remain, Therefore, Jews

Yom Kippur Welcome 5787

Let’s take a little stroll through history.

In 1913, a brilliant young German Jewish philosopher named Franz Rosenzweig had made up his mind. He was going to convert to Christianity. 

He had spent years studying philosophy, arguing with his closest friends and cousins, most of whom had already converted, and he had come to believe, intellectually, that Christianity was where the truth lived. 

Judaism, to him, felt like an empty shell. A relic. Something his family kept out of habit, not conviction.

To understand why an intellect like Rosenzweig even considered leaving Judaism, we have to understand the context of his world.

A century before him, Jews in Germany converted mostly for practical reasons. The law barred Jews from universities, courtrooms, and government posts.

Conversion through Baptism became, in the poet Heinrich Heine’s own blunt words, “the ticket of admission into European culture.” 

For Heine’s generation, conversion wasn’t about God. It was paperwork you signed to get a career.

By Rosenzweig’s generation, something more seductive had taken hold. 

Martin Hegel (1770–1831) was a hugely influential German philosopher who taught that Spirit / God progresses through history in stages toward greater self-understanding, with each religion representing a more evolved stage, and Christianity is the culmination. 

That framework let educated Jews like Rosenzweig see conversion less as betrayal and more as philosophical advancement.

Rosenzweig’s closest friends who converted weren’t chasing jobs. They were intellectual men who had followed serious philosophy to a serious conclusion. 

And the Judaism Rosenzweig had grown up with, thinned out by decades of assimilation, felt hollow and unsubstantial gave him little to hold onto. 

Then came one night. July 1913. Leipzig, Germany.

Rosenzweig sat up until dawn with his friend Eugen, arguing, the way they always argued. Rosenzweig was the philosopher. Detached. Analytical. He could argue circles around almost anyone.

But that night, Eugen didn’t bring him an argument. He brought him something simpler. He just said what he believed. Plainly. A confession of faith in a living God.

Rosenzweig had no comeback. Not because the words were so brilliant. They weren’t. It was something else. 

Here was a man as sharp, as rigorous, as skeptical as Rosenzweig himself. And that man could still kneel down in prayer and mean it.

That broke something open in him. By sunrise, Rosenzweig had agreed. He would convert.

The condition, and the “ten days of return”

But Rosenzweig set one condition for himself. He didn’t want to arrive at Christianity from nowhere, the way he put it, as a “pagan” would. 

He wanted to come to it as a Jew, having actually stood inside Judaism one final time, eyes open, before leaving it. 

So he asked for time. He would observe the Days of Awe, from Rosh Hashanah to Yom Kippur, fully and sincerely, as his last act as a believing Jew. 

He called this stretch of days his personal “ten days of return,” though at the time he honestly meant return as a farewell visit.

What happened at Yom Kippur

On Yom Kippur, Rosenzweig went to a small, traditional synagogue in Berlin.

 Not the assimilated liberal congregations of his own upbringing but an Orthodox shtiebel filled with Eastern European immigrant Jews who prayed without any self-consciousness at all. 

Rosenzweig never wrote a clean, personal account of exactly what happened to him in that shul. 

But what we do know is that something in that unguarded, wholehearted praying reached him in a way that German philosophy, however brilliant, had reached only his mind. 

Yom Kippur didn’t feel like a winning debate. It felt like a homecoming.

What happened over the following months

The change wasn’t instant or total. Rosenzweig spent the weeks after Yom Kippur working through what had shifted in him. 

In a letter to his Eugen, he finally put it plainly: 

Conversion now seems unnecessary, and for me impossible. 

I remain, therefore, a Jew.

He remained a Jew, not because he’d out-argued his Christian friends, but because he had found, underneath all the arguments, that Judaism was no longer the empty shell he’d assumed. It was alive. 

He simply hadn’t been standing close enough to feel it

He spent the rest of his short life making up for that distance. 

He wrote The Star of Redemption, one of the most important works of modern Jewish philosophy, largely written in the form of letters postcards from the front during World War I, 

He founded the Free Jewish House of Learning in Frankfurt, a school built specifically for other assimilated Jews who, like him, had never really been taught to feel their own tradition from the inside. 

And with fellow philosopher, Martin Buber, he undertook a massive new German translation of the Hebrew Bible, trying to make the text sound as mystical and alive in German as it had first sounded to him that Yom Kippur.

He gave the rest of his short life, he died young, still writing, still teaching, even after illness took his ability to speak or move his hands, to helping other assimilated Jews find their way back.

I tell you this story today, on this holy of holy days, because Yom Kippur is not a day for the brain. It is not an argument. It is not a debate we are here to win.

Maybe you walked in here today still deciding what you believe. Maybe you’ve spent all year arguing with God, or with this community, or with the whole idea of showing up. 

Maybe your mind has already made up its case against being here. Rosenzweig’s mind had too.

Our mind is not the only part of us that gets a vote. Somewhere underneath the arguments, there is a part of us that already knows things your brain hasn’t caught up to yet. 

That part of us brought us here today. That part of us is capable of changing course completely, even at the very last minute, even after we thought the decision was already made.

That is the whole promise of this day. 

Yom Kippur means we get to let go of promises, of certainties, of the version of ourselves we swore we’d be. We get a reset. 

So today, whatever brought you through these doors, however sure or unsure you are of anything, I invite you to stop arguing for a moment. 

Let the melodies in. Let your heart search for a while before your head starts thinking again.

As Rosenzweig said, finally after years of debate: We remain, therefore, Jews. 

Let’s begin.