Blotting out Amalek through joy and Shabbos

הוקבע מחיית עמלק בזה החודש דבריא מזלייהו של בני ישראל.

The blotting out of Amalek was established in this month, for the mazal (constellation) of Bnei Yisrael is strong.

The Sefas Emes notes that the obligation to wipe out Amalek falls in Adar, the month whose spiritual influence favors Bnei Yisrael, giving them the strength to prevail over their enemy.

כדאיתא לישתמיט מיניה עד אדר.

As Chazal say, one should slip away from him until Adar.

One who has a quarrel with Amalek (or, as Chazal teach, one whose mazal is weak in a given month) should avoid confrontation until Adar, when the time is ripe and the upper hand belongs to Bnei Yisrael.

דכ' ברפידים שרפו ידיהם.

For it is written regarding Refidim that they slackened (rafu) their hands.

The name Refidim hints that Bnei Yisrael had loosened their grip on Torah, and this weakening of their bond with Hashem is what opened the door for Amalek to attack.

לכן הי' לו כח להלחם עמהם.

That is why he had the power to wage war against them.

Amalek's strength is never independent; it draws entirely from the slackening of Bnei Yisrael's avodah, so his power waxes only when their bond weakens.

דכשזה קם זה נופל.

For when this one rises, the other falls.

The forces of kedushah and the forces of Amalek operate as a seesaw: when Bnei Yisrael rise in their attachment to Hashem, Amalek collapses on its own.

ובניסן מתחיל התרוממות בני ישראל והשתוקקות והשמחה שיש לבנ"י להתקרב אליו ית' בזאת השמחה של מצוה יכולין למחות שם עמלק.

And in Nissan the elevation of Bnei Yisrael begins — the longing and the joy that Bnei Yisrael have to draw close to Him, may He be blessed; with this simcha shel mitzvah (joy of a mitzvah) they are able to blot out the name of Amalek.

The redemptive energy that crests in Nissan already starts stirring in Adar as a yearning to come close to Hashem. Precisely this joy of doing a mitzvah is the weapon that erases Amalek, for Amalek embodies coldness and doubt, which cannot survive the warmth of joyous avodah.

כי בגלות אין יכולים להלחם עמו בכל עת כמ"ש שלא יאסוף עליך אגודה.

For in galus we cannot wage war against him at every moment, as it is said, "so that he not gather a band against you."

During exile Bnei Yisrael are not always able to fully confront Amalek, since open battle is not always within reach; only at the right season and in the right way can the struggle be waged.

לכך רק בהניח ה' אלקיך לך כו'.

Therefore only "when Hashem your God grants you rest…"

The mitzvah to wipe out Amalek is bound up with a state of rest and settledness, a time when Bnei Yisrael are tranquil enough to overcome him fully.

ולכן בחרו לזכור אותו ביום השבת.

And so they chose to remember him on Shabbos.

Because the blotting out of Amalek depends on "rest," the Sages fixed Parshas Zachor to be read on Shabbos, the day of menuchah, which is itself the ultimate state of rest and closeness to Hashem.

ואמת שבכל שבת יש קצת מחיית עמלק.

And in truth, on every Shabbos there is a measure of blotting out Amalek.

Every Shabbos accomplishes a partial erasure of Amalek, since the holiness and rest of the day push aside the coldness and doubt that Amalek represents.

שהוא מעין עוה"ב ושם לא יהי' לו זכר כמ"ש אמחה את זכר עמלק מתחת השמים:

For Shabbos is a taste of Olam Haba, and there he will have no remembrance, as it is written, "I will utterly blot out the memory of Amalek from under the heavens."

Shabbos is a foretaste of the World to Come, a realm where Amalek has no foothold whatsoever; thus the weekly day of rest already begins to fulfill the promise that Amalek's memory will be entirely erased.

Summary: The mitzvah to blot out Amalek is rooted in the season of Adar and Nissan and in the state of rest, for Amalek's power depends entirely on the slackening of Bnei Yisrael's bond with Hashem. The joy of mitzvah and the menuchah of Shabbos — itself a taste of Olam Haba — are the very forces that erase him.