Torah elevates the outer and the lowly

במדרש יקרה היא מפנינים מכ"ג שנכנס לפני ולפנים ומבכור שנקרא ראשית כמ"ש לפנים בישראל כו'.

In the Midrash: "She is more precious than pearls (peninim)" — more precious than the Kohen Gadol who enters the innermost chamber (lifnai velifnim), and than the firstborn who is called "first (reishis)," as it is said "in former times in Yisrael…"

The Midrash expounds that the Torah ("she") is more precious than "peninim," read as alluding both to the Kohen Gadol who enters the innermost Holy of Holies and to the firstborn called "first."

פי' שהתורה יש בה שלימות הכל לתקן אף מה שבחוץ כמ"ש ברחובות במקום שמרחיבין אותה ויורדת למקום נמוך.

The meaning is that the Torah contains the perfection of everything, to rectify even that which is outside, as it is written "in the streets (rechovos)" — in the place where it is broadened, and where it descends to a low place.

The Torah's completeness reaches even the "outside" — the broad, public streets and the lowest places — drawing on the verse that wisdom "calls out in the streets," showing it can rectify even the external and the lowly.

והיא יקרה מהפנימיות ומהראשית.

And she is more precious than the inner dimension (penimiyus) and than the "first" (reishis).

The Torah surpasses even the lofty inner realm of the Kohen Gadol and the elevated rank of the firstborn.

שהיא מתקנת החיצוניות להתקרב להפנימיות.

For she rectifies the outer dimension (chitzoniyus), bringing it near to the inner dimension.

The Torah's unique greatness is that it draws the outer, external realm close to the holy inner realm.

ותחתונים להעלותן לראשית הכל.

And it raises up the lower ones (tachtonim) to the "first" of all (reishis).

It also elevates the lowest realms, lifting them up to their source — the very "first" and root of all.

לכן נאמר תורת ה' תמימה שכוללת הכל לכן משיבת נפש כמ"ש במד' שיצאה נשמתן של ישראל ותורה אמרה כלום יש מלך כו' והורג אנשי ביתו כו'.

Therefore it is said "the Torah of Hashem is perfect (temimah)," for it includes everything; therefore it "restores the soul" (meshivas nafesh), as it is brought in the Midrash that the souls of Yisrael departed (at Sinai), and the Torah said: "Is there a king who… slays the people of his own household?…"

Because Torah encompasses everything — outer and inner, high and low — it is "perfect" and able to "restore the soul," as the Midrash relates that when Yisrael's souls left them at the giving of the Torah, the Torah itself interceded to revive them.

פי' שזה שלימות התורה להמשיך בחי' התחתונות להראשית:

The meaning is that this is the perfection of the Torah — to draw the aspect of the lower realms up to the "first."

The Torah's completeness lies precisely in this power: to connect and elevate even the lowest dimensions back to their exalted source.

Summary: The Torah is "more precious than peninim" — surpassing even the Kohen Gadol's innermost service and the firstborn's rank — because its perfection (temimah) encompasses everything: it rectifies the outer dimension by drawing it near to the inner, and raises the lowest realms up to their source, the "first" of all. This all-encompassing power is why the Torah "restores the soul," reviving Yisrael when their souls departed at Sinai.