Kiddush Hashem through bittul to the collective

ונקדשתי בתוך בנ"י.

"And I shall be sanctified in the midst of Bnei Yisrael."

The pasuk teaches that the sanctification of Hashem's Name takes place specifically "in the midst of" Bnei Yisrael.

חז"ל פי' למסור עצמו על קדושת הש"י.

Chazal explained this as referring to giving oneself over (mesiras nefesh) for the sanctification of Hashem's Name.

The Sages read the verse as the source for kiddush Hashem — being ready to sacrifice oneself for the honor of Hashem.

פי' עיקר הקדושה תוך בנ"י דוקא.

The meaning is that the essential holiness is specifically "in the midst of" Bnei Yisrael.

True kedushah is not a private, isolated achievement; it is found precisely within the collective body of Bnei Yisrael.

כמ"ש חז"ל לעולם יראה אדם עצמו כאילו קדוש שרוי תוך מעיו.

As Chazal said: a person should always see himself as if a holy one dwells within his innards.

Each person carries a holy presence within his very core — a point of kedushah residing inside him that he must be conscious of.

וזאת הקדושה א"א להרגיש רק במס"נ.

And this holiness cannot be felt except through mesiras nefesh (self-sacrifice).

The only way to truly sense that inner holiness is by being willing to give oneself over entirely to Hashem.

וגם להכניס עצמו תוך כללות ישראל וגם ע"י הביטול לכללות ישראל יכולין למס"נ כמ"ש חז"ל שהמצוה בעשרה שנק' תוך ע"ש.

And also to bring oneself into the collective of Yisrael; and indeed through bittul (self-nullification) to the collective of Yisrael one is able to reach mesiras nefesh, as Chazal said that the mitzvah [of kiddush Hashem] is "with ten," which is called "toch (midst)" — see there.

The two go together: joining oneself to Klal Yisrael and nullifying one's private self into the whole is itself what empowers a person to mesiras nefesh. This is why kiddush Hashem is performed specifically in a quorum of ten — the "midst" of Yisrael — for the collective is the wellspring of that strength.

כי הנהגת בנ"י למעלה מן הטבע לכן בכח בנ"י לעשות נגד הטבע.

For the conduct of Bnei Yisrael is above nature; therefore it is within the power of Bnei Yisrael to act against nature.

Bnei Yisrael are governed by a hanhagah that transcends the natural order, and so they possess the power to override nature itself — including the natural instinct of self-preservation.

וממילא הטבע מתבטל בעבורם.

And consequently, nature nullifies itself before them.

Once a Jew binds himself to that supernatural root, nature yields and bows before him.

וז"ש אני ה' מקדישכם המוציא אתכם מא"מ כו'.

And this is the meaning of "I am Hashem who sanctifies you, who brought you out of the land of Mitzrayim..."

The verse links the power of sanctification to the Exodus, when Hashem demonstrated His mastery over nature in redeeming Bnei Yisrael.

לכן ביכולתיכם למסור נפשכם ע"ק שמי כנ"ל.

Therefore it is within your power to give over your souls for the sanctification of My Name, as explained.

Because Hashem lifted Bnei Yisrael above nature at the Exodus, they are empowered to transcend nature again through mesiras nefesh for kiddush Hashem.

ואיתא ברש"י ות"כ ע"ת זה הוצאתי אתכם כו'.

And it is brought in Rashi and the Toras Kohanim: "on this condition (al menas) I brought you out [of Mitzrayim]..."

Rashi, citing the Toras Kohanim, teaches that the very purpose of the Exodus was conditional upon Bnei Yisrael being ready to sanctify Hashem's Name.

פי' שכפי מה שאדם מוסר נפשו להש"י כך מתבטל הטבע בעבורו ומעורר נסי יצ"מ כמ"ש במ"א:

The meaning is that according to the measure in which a person gives over his soul to Hashem, so does nature nullify itself before him, and he arouses the miracles of the Exodus, as we have written elsewhere.

There is a direct correspondence: the more a person is ready to give himself over to Hashem, the more nature yields before him, and he reawakens the very supernatural power that was revealed at yetzias Mitzrayim.

Summary: "I shall be sanctified in the midst of Bnei Yisrael" teaches that the essential kedushah of kiddush Hashem is found within the collective — which is why it requires ten, the "midst" of Yisrael. By nullifying oneself into Klal Yisrael a person gains the power of mesiras nefesh, for the conduct of Bnei Yisrael is above nature and nature yields before them. This power flows from the Exodus, which Hashem performed on condition that Yisrael sanctify His Name; the more one gives himself over to Hashem, the more nature bows and the miracles of yetzias Mitzrayim are reawakened.