Earthly Avodah Rousing Heaven
והי' א"ש תשמע במד' אשרי א' שומע לי אשריו לאדם בשעה ששמועותיו לי כו' לשקוד על דלתותי דלת לפנים מדלת כו'
On the verse 'And it shall be, if you hearken' (Devarim 28:1), the Midrash teaches: 'Fortunate is the man who hearkens to Me' (Mishlei 8:34) — fortunate is the person at the moment when his hearing is directed to Me, as it says, 'to wait at My doors,' a door within a door.
The Sfas Emes opens with a Midrash that links the parsha's word for 'hearkening' to the verse in Mishlei praising the one who listens to Hashem, picturing a person waiting eagerly at door after inner door.
אם אתה עושה כן דע שאתה מקבל פני השכינה כו'
The Midrash continues: If you do so, know that you are receiving the Shechinah.
The Midrash promises that whoever listens in this way is, in effect, greeted by the Shechinah itself.
פי' בשעה ששמועותיו לי אז עיקר האשרי כמ"ש במשנה יפה שעה א' בתומ"ט בעוה"ז מכל חיי עוה"ב
The meaning of 'at the moment when his hearing is directed to Me' is that this is the essence of the 'fortunate,' as the Mishnah says (Avos 4:17): 'Better one hour of teshuvah and good deeds in this world than all the life of Olam Haba.'
He explains that the true 'good fortune' is the moment one's listening is aimed at Hashem, which he connects to the Mishnah's praise of even one hour of teshuvah and good deeds.
וא"א לפרש כי יפה הוא בעוה"ז שהרי מסיים דיעה שעה א' של קורת רוח בעוה"ב מכל חיי עוה"ז
And one cannot explain that this world is the better one, for the Mishnah concludes: 'Better one hour of spiritual delight in Olam Haba than all the life of this world.'
He blocks a possible misreading: the Mishnah cannot mean that this world is simply superior, since it also praises one hour of bliss in Olam Haba over all of this world.
אבל הפי' כי האדם סולם מצב ארצה ורא' מגיע השמימה ושורש נשמת האדם למעלה חלק אלקי ממעל
Rather, the explanation is that man is a ladder set upon the earth whose top reaches the heavens, and the root of a person's neshamah is on high, a portion of Hashem from above.
He resolves it with the image of Yaakov's ladder: a person stands on earth but his neshamah is rooted in Heaven, a literal portion of Hashem above.
וכשעושה למטה מצוה ותורה מעורר כח הנשמה למעלה וזה אשריו ושם מקבל פני השכינה
And when one performs a mitzvah and Torah below, he awakens the power of the neshamah on high — and this is his good fortune, and there he receives the Shechinah.
A mitzvah or Torah done here below activates the soul's root above — that activation is the real 'good fortune,' and it is there that one meets the Shechinah.
וז"ש דע שאתה מקבל אע"פ שאינו מרגיש למטה
This is the meaning of 'know that you are receiving the Shechinah,' even though he does not feel it below.
So the Midrash says 'know' that you receive the Shechinah precisely because the effect happens on high, beyond what one senses in this world.
וזה שמוע תשמע דלת לפנים מדלת כשזוכה בשמיעה שלמטה לעורר שמיעת הנשמה למעלה
And this is the meaning of 'if you surely hearken' (literally, hearing within hearing), a door within a door — when one merits, through the hearing below, to awaken the hearing of the neshamah on high.
The doubled verb 'hearing within hearing' mirrors 'door within door': earthly listening triggers a deeper, heavenly listening of the neshamah.
וכמ"ש א' יעשה א' האדם וחי בהם בחיי עלמא כמ"ש מזה בפ' אחרי ע"ש
And this is as it is written, 'which a person shall do and live by them' (Vayikra 18:5) — 'and live' refers to eternal life, as is explained at length on this in Parshas Acharei; see there.
He supports this with 'do them and live,' read as eternal life, cross-referencing his fuller treatment in Parshas Acharei.
לכן שמיעה שני' כ' תשמע שהיא בא ממילא ע"י זו השמיעה שלמטה
Therefore the second 'hearing' is written as 'you shall hear' (in the future, automatic form), for it comes of itself through this hearing below.
The second verb is in the automatic future form because that higher hearing comes on its own once the lower listening is done.
וזה ענין גדול העונה אמן יותר מן המברך דאתא בגמ' עלה א"ר נהוראי השמים כן הוא תדע שגוליירין מתגרין במלחמה וגבורים נוצחין
And this is the great matter that 'the one who answers Amen is greater than the one who makes the berachah,' which is brought in the Gemara (Nazir 66b): Rabbi Nehorai said upon this, 'By Heaven, it is so! Know that the foot soldiers open the battle, but it is the mighty warriors who win the victory.'
He brings the Gemara that the one answering Amen outranks the one reciting the berachah, illustrated by Rabbi Nehorai's image of foot soldiers starting the battle while the warriors actually win it.
הרמז כי עיקר הנצחון בכח השורש שלמעלה בשמים וכל העבודה למטה הוא רק בחי' גוליירין מתגרין במלחמה ומתעורר כח הגבורה שבשמים
The hint here is that the essence of the victory lies in the power of the root on high in Heaven, and all the avodah below is only on the level of the foot soldiers who open the battle and thereby awaken the power of the mighty warriors in Heaven.
The lesson: real victory comes from the root above, while all our avodah below merely opens the fight and rouses that heavenly strength.
ועניית אמן היא המשכת הסכמה משמים כמ"ש אמן כן יאמר ה'
And the answering of Amen is the drawing down of agreement from Heaven, as it says, 'Amen, so may Hashem declare' (Yirmiyahu 28:6).
Answering Amen is the act that draws Heaven's confirming agreement down, as the prophet's 'Amen, so may Hashem declare' shows.
וכ' המתברך בארץ יתברך באלוקי אמן
And it is written, 'He who blesses himself in the land shall bless himself by the God of Amen' (Yeshayahu 65:16).
He adds the verse of blessing oneself by 'the God of Amen,' tying blessing itself to this idea of Heavenly assent.
וזה עיקר הנצחון בהסכמה מן השמים:
And this is the essence of the victory — through the agreement from Heaven.
The closing line: true triumph is achieved through that agreement granted from Heaven.
Summary: The Sfas Emes builds on a Midrash that crowns as 'fortunate' the person whose listening is fixed on Hashem, one who waits at door within inner door. Drawing on the image of Yaakov's ladder, he teaches that a person stands on earth while his neshamah is rooted on high as a portion of Hashem; every mitzvah and word of Torah performed below awakens that root above, where one truly receives the Shechinah even without feeling it here. The doubled verb 'hearing within hearing' shows that earthly avodah triggers a deeper hearing of the neshamah in Heaven, which then comes of itself. He links this to the principle that the one answering Amen surpasses the one making the berachah, using the Gemara's image of foot soldiers who merely open the battle while the mighty warriors win it — so too our avodah below only rouses the decisive strength of the root above. The answering of Amen draws down Heaven's agreement, and that Heavenly assent is the true essence of victory.