Milah as the source of joy

בענין שם יצחק על שם השמחה.

Concerning the name Yitzchak, which is given on account of joy.

The name "Yitzchak" derives from the root "tzchok" — laughter and joy. The Sefas Emes explores why this child in particular bears a name of simcha.

נראה כי עיקר השמחה על ידי המילה כמ"ש שש אנכי על אמרתך וע"ז כתיב פתחת שקי ותאזרני שמחה וכן אוזר ישראל בגבורה הוא על המילה.

It appears that the essence of joy comes through the milah (circumcision), as it says, "I rejoice over Your word" (Tehillim 119:162); and concerning this it is written, "You loosened my sackcloth and girded me with joy" (Tehillim 30:12); and likewise "[Blessed are You...] who girds Yisrael with strength" refers to the milah.

True simcha flows specifically from the bris milah. The pasuk "sas anochi al imrasecha" is read by Chazal as joy over the mitzvah of milah, and the "girding with joy" and "girding Yisrael with strength" likewise allude to this mitzvah.

כי קודם חטא אדה"ר לא הי' ערלה רק ע"י החטא נתערב פסולת ונגזר בעצב תלדי בנים שהיא תערובות הפסולת שמזה בא כל העצבון.

For before the sin of Adam HaRishon there was no orlah; only through the sin did dross (pesoles) become intermingled, and it was decreed "in sorrow you shall bear children" — which is the admixture of the dross, from which all sadness comes.

Before the first sin man had no "foreskin" — no excess of impurity. The sin introduced a layer of dross into creation, and the resulting decree of "in sorrow shall you bear children" expresses this admixture, the source of all grief.

וכשזכה אברהם לברית מילה פתחת שקי בא השמחה.

And when Avraham merited the bris milah, "You loosened my sackcloth" — joy came.

By receiving the mitzvah of milah, Avraham stripped away that screen of dross, and in its place came simcha.

וכ"כ לישרי לב שמחה וע"י המילה יכולין ליישר הלב דכתיב האלקים עשה האדם ישר והמה בקשו חשבונות רבים ואלה החשבונות רבים באים ע"י פסולת הערלה בחי' להט החרב המתהפכת כו'.

And so it is written, "and joy for the upright of heart" (Tehillim 97:11); and through the milah one is able to straighten the heart, as it is written, "Hashem made man upright, but they sought many calculations" (Koheles 7:29) — and these "many calculations" come through the dross of the orlah, the aspect of "the flame of the ever-turning sword."

Joy belongs to the "upright of heart," and milah is what straightens the heart. Man was created upright, but the dross of the orlah produces endless twisting "calculations" — likened to the turning sword that bars Gan Eden — pulling the heart this way and that.

וע"י המילה נעשין ישרי לב.

And through the milah they become upright of heart.

Removing the orlah removes the crookedness, restoring the heart to its original straightness.

ויצחק ראשון הנימול לשמונה והיה מלא שמחה.

And Yitzchak was the first to be circumcised on the eighth day, and he was full of joy.

Yitzchak was the first to receive milah at exactly eight days old, in perfect form, and so his very name expresses the fullness of simcha that flows from it.

וכמ"ש בביהמ"ק יפה נוף משוש כל הארץ.

And just as it is written of the Bais HaMikdash, "beautiful in elevation, the joy of all the earth" (Tehillim 48:3).

The Bais HaMikdash is the single point of joy that radiates to the entire land — the focal center of simcha in the realm of "olam" (space).

כמו כן בנפש.

So too in the soul (nefesh).

There is a parallel focal point of joy in the dimension of "nefesh" — the human person.

המילה משוש כל הגוף.

The milah is the joy of the whole body.

Just as the Mikdash is the joy-center of the land, the bris milah is the joy-center of the entire body.

וכן שבת ויו"ט משוש כל הזמנים.

And likewise Shabbos and Yom Tov are the joy of all the times.

In the dimension of "shanah" (time), Shabbos and the festivals are the points of joy from which all other times draw.

כי עולם שנה נפש כולם צריכין בירור לצאת מן העצבון אל בחי' השמחה:

For olam, shanah, nefesh (space, time, soul) all require a refinement (birur) to go out from sadness into the aspect of joy.

The three axes of creation — space, time, and soul — each need a process of clarification to be lifted out of the sadness born of the dross, into a state of true simcha, anchored respectively in the Mikdash, in Shabbos and Yom Tov, and in the milah.

Summary: The name Yitzchak expresses joy, because true simcha flows from the bris milah, which removes the "dross" of the orlah introduced by Adam's sin — the source of all sadness and of the heart's twisting "calculations." Yitzchak, first to be circumcised on the eighth day, embodies this joy. Just as milah is the joy-center of the body, so the Bais HaMikdash is the joy-center of space and Shabbos and Yom Tov of time; each of the three axes — olam, shanah, nefesh — needs refinement to rise from sadness into joy.