- The Ran notes that there is a concept (Bamidbar 15:16) that there is one Torah and one law for all Jews. In other words, there should ordinarily be only one day for all Jews to celebrate together. For this reason, Mendel Weinbach notes, usually, according to Halacha (Mishna Berura 688:12), where one spends Purim determines when one will celebrate it. For example, a Jew visiting a walled city temporarily nevertheless celebrates it there for purposes of achdus (“unity”).
- R’ Betzalel haKohen of Vilna, however, writes that this distinction is meant to stress that Purim is a d’rabbanan (“rabbinic”) holiday, since the Torah’s (Devarim 13:1) prohibition to add to the given mitzvos only applies to d’oraisa (“Scriptural”) laws.
- A story is told of a visitor from Bnei Brak in the home of R’ Shlomo Bloch in Yerushalayim. R’ Bloch invited him to drink at his Purim feast (on Shushan Purim), but since he had already drunk the previous day, the visitor argued that he had already fulfilled the mitzva of drinking on Purim. R’ Bloch retorted, “You may have fulfilled Purim, but you can still fulfill the mitzva of feeling another Jew’s joy.”
- The Chasam Sofer gives another reason to have two days of Purim – to avoid bitul Torah. Since the Mishna (Avos 1:2) teaches that Torah is one of the three foundations upon which the world stands, if there were (chas v’Shalom) one moment when nobody was learning Torah, the world would cease to exist immediately. With the advent of Shushan Purim, while one group is drinking and celebrating, the other group can uphold the world by learning.
יא אֲשֶׁר נָתַן הַמֶּלֶךְ לַיְּהוּדִים ׀ אֲשֶׁר בְּכָל–עִיר–וָעִיר לְהִקָּהֵל וְלַעֲמֹד עַל–נַפְשָׁם לְהַשְׁמִיד וְלַהֲרֹג וּלְאַבֵּד אֶת–כָּל–חֵיל עַם וּמְדִינָה הַצָּרִים אֹתָם טַף וְנָשִׁים וּשְׁלָלָם לָבוֹז
11. “That the king gave to the Yehudim who were in each city and city to gather, and to stand on their souls, to annihilate, and to kill, and to destroy any army of the nation and state who antagonize them, infants, and women. And their property they should plunder.
According to Dena Pishra, the letters required the Jews to gather because Jewish unity is a powerful method of attaining H-Shem’s assistance.
The Sfas Emes adds that Jews have an aggregate soul, and our combined effort is especially needed when we are in danger.
Furthermore, the Ginzei HaMelech asks that if the word “unify” requires two or more people, and the word “stand” implies one [as one person stands for oneself], which is the letters’ intent? Based on Rashi’s comment on the Talmud (Shabbos 127b) that “stand” means to pray, he answers that the Talmud (Bava Kama 97a) promises a Jew that when one prays for another’s needs, one’s prayers are never rejected. The Talmud (Brachos 8a) says the same idea regarding communal prayer.
- Dena Pishra writes that Achashverosh and Haman sat down to drink to finalize their deal.
- Eyney Ha’Eyda, on the other hand, writes that Haman here attempted to get Achashverosh drunk to keep him from changing his mind, as he is liable to do. Perhaps this is one of the reasons we drink on Purim.
- The fact that Achashverosh is drinking at this point is one of Malbim’s strongest proof that he did not know what was going on. Otherwise, he should worry at least, but certainly not have a drink!
- R’ Moshe Dovid Valle brings a proof against the idea that Achashverosh was blissfully ignorant of Haman’s plans. He notes that the gematria of Haman (5+40+50=95) is equal to “hamelech” (“the king”) (5+40+20+30=95). Therefore, he writes, they were equal in their evil and equal in their joy.
- R’ Dovid Feinstein quotes the Talmud (Sanhedrin 63a) that the Jewish court is not allowed to eat on a day it passes the death sentence on someone. The reason for this is that the court should not celebrate the taking of a human life. The fact that Haman and Achashverosh are drinking at this point is evidence that they are cheerful, thinking that they are doing the world a favor. Like many evil people in history, they allowed their good intentions to perform the worst of actions in the Machiavellian delusion that the ends justify the means.
- The Midrash (Esther Rabbah 7:21) writes that this drink-fest is a consequence of Yosef’s brothers sitting down to eat after throwing him into the potentially deadly pit (Bereishis 37:25). In one view, the entire Purim story is a tikkun for the sale of Yosef. The only reason we could be punished for the sins of our ancestors is if we continue to repeat the same mistakes (Rashi to Shemos 20:5). The main sin of the brothers was that they lacked love for their brother. Again, this is why unity is one of the themes of Megillas Esther.