Deed as the essence of Torah

קריאת רות בשבועות להודיע כי לא המדרש העיקר אלא המעשה.

The reading of Rus on Shavuos is to make known that it is not the study (midrash) that is primary, but the deed (maaseh).

Megillas Rus is read on Shavuos — the zman of Mattan Torah — to teach that the ultimate purpose of Torah is not theoretical learning alone but its translation into action, as Rus's story is one of devoted deeds.

וכ"כ אשרי אדם עוז לו בך שיהי' התורה נבלעת בדמו.

And so it is written: "Fortunate is the man whose strength (oz) is in You" — that the Torah should become absorbed into his very blood.

True greatness is when Torah is not external knowledge but is so internalized that it is "absorbed into one's blood" — becoming part of the person himself, the meaning of having one's "oz" in Hashem.

מסילות בלבבם לעשות חקיקה ורשימות בלב.

"Highways are in their hearts" — to make an engraving and impressions upon the heart.

The continuation of the verse, "highways in their hearts," means the Torah carves permanent pathways and impressions (reshimos) within a person, so that it shapes him from within.

וכן הי' מעשה בועז ורות תורה.

And so it was that the deed (maaseh) of Boaz and Rus was Torah.

The very actions of Boaz and Rus — their chesed and devotion — were themselves a living Torah, Torah expressed entirely as deed.

ולכן נקרא בועז בו עוז שהיא התורה.

Therefore he is called Boaz — "bo oz" (in him is strength) — which is the Torah.

The name Boaz hints at "bo oz," "in him is oz," and oz refers to Torah (as Chazal say, "oz is nothing but Torah"); Boaz personified Torah lived as action.

ובנ"י הבינו זאת לכן הקדימו נעשה לנשמע לומר שהעיקר המעשה.

And Bnei Yisrael understood this, and therefore they placed "naaseh" (we will do) before "nishma" (we will hear), to say that the deed is primary.

At Har Sinai Bnei Yisrael famously said "naaseh v'nishma," committing to do before fully understanding — precisely because they grasped that maaseh, action, is the essential goal of Torah.

ולכן אמרו אם יוספים אנחנו לשמוע כו'.

And therefore they said: "If we continue to hear [the voice of Hashem any longer, we will die]…"

After the first dibros the people drew back, fearing that more direct "hearing" without corresponding deeds would overwhelm them. The Sefas Emes reads this as a concern about hearing/understanding outpacing action.

כי הרגישו שלא נמשכו לגמרי אחר דבר ה' דכ' וינועו ויעמדו מרחוק.

For they sensed that they had not been drawn entirely after the word of Hashem, as it is written: "and they trembled and stood far off."

Bnei Yisrael honestly felt that their deeds had not yet fully caught up to the lofty revelation; the verse "they stood far off" reflects this gap between what they heard and what they had actualized.

ויראו שלא יהי' חכמתם מרובה ממעשיהם.

And they feared that their wisdom would exceed their deeds.

Their concern was the imbalance Chazal warn against — that one's knowledge should not be greater than one's actions, for then the wisdom has no enduring root.

ועל כזה נאמר יוסיף דעת יוסיף מכאוב.

And concerning such a case it is said: "one who increases knowledge increases pain."

Koheles's words are applied here: knowledge that outstrips one's deeds brings pain, because unrealized wisdom becomes a burden rather than a blessing.

פי' יוסיף שהחכמה מרובה ממעשיו.

The explanation: "he increases" — that his wisdom becomes greater than his deeds.

The Sefas Emes defines the "increase" of the verse precisely as this dangerous surplus of knowledge over action.

וזה הי' חטא הראשון שהביא המיתה באכילת עץ הדעת.

And this was the original sin that brought death, through eating from the Eitz HaDaas (Tree of Knowledge).

Adam's sin was grasping for "daas" — knowledge — beyond what his deeds could hold, and this imbalance is what introduced death into the world.

וז"ש אם יוספים כו' ומתנו.

And this is what is meant by "if we continue [to hear]… we will die."

Bnei Yisrael's fear of "dying" from too much hearing echoes the Eitz HaDaas: an excess of knowledge over deed is itself the source of death, which they wisely sought to avoid.

וכ"כ דע אלקי אביך ועבדהו שעיקר הדעת שמביא לידי עבדות ה'.

And so it is written: "Know the God of your father and serve Him" — for the essence of daas (knowledge) is that which leads to the service of Hashem.

Dovid's charge to Shlomo links "knowing" Hashem directly to "serving" Him, teaching that true daas is the kind that produces avodas Hashem — knowledge that flows into deed.

וזהו דעת התורה שע"ז מברכין אתה חוננתנו כו' ותלמדנו לעשות חוקי רצונך שיבוא לידי מעשה הטוב שזה העיקר:

And this is the daas of Torah, concerning which we bless "You have graced us [with knowledge]…" and "teach us to do the statutes of Your will" — that it should come to the good deed, for that is the essence.

The weekday berachah "Atah chonantanu" asks Hashem to teach us to do His chukim; the goal of all the daas He grants is that it culminate in good action — the true ikar of Torah, just as the Megillah and "naaseh v'nishma" teach.

Summary: Rus is read on Shavuos to teach that maaseh, not study alone, is the essence of Torah — Torah must be absorbed into a person and engraved on the heart, as embodied by Boaz ("bo oz") and by "naaseh v'nishma"; knowledge that exceeds deeds is the imbalance that brought death through the Eitz HaDaas, so the true daas of Torah is the kind that culminates in avodas Hashem and good deeds.