15. And the Yehudim who were in Shushan gathered also on the fourteenth of the month of Adar. And they killed in Shushan three hundred man. And in their spoils they did not send their hands.
The Targum Sheini indicates that the three hundred mentioned in this verse were all leaders among Amalek. It continues that Zeresh ran away (see # 521 above) together with 70 remaining sons of Haman, Shimshi was killed in battle, and Haman’s other sons were among the 300 killed. The point is that nobody left alive could positively be traced to Haman’s family. He was wiped out mida kineged mida, as he had planned to do to the Jews.
Maamar Mordechai writes that these 300 came to fight in order to avenge the death of Haman, their former leader.
On the other hand, Yad HaMelech explains that fewer people were killed because they were afraid of the Jews’ military prowess.
The Ginzei HaMelech notes that the Rambam (Mishneh Torah, Hilchos Megillah 1:5) states that Shushan Purim is fully celebrated as Purim on the fifteenth of Adar in cities that were walled from the days of Yehoshua. The Ginzei HaMelech explains that this is the reference point because in the days of Yehoshua (Yehoshua 11:20), too, H-Shem instilled a false sense of confidence into the minds of the Jews’ enemies. Similarly, these 300 enemies illogically felt emboldened to do battle against the Jews despite the obvious fallacy of their imagined success. The prophet (Yechezkiel 39:2-3) promises that a similar incident will happen in the time of Moshiach, bimheira biyameinu.
Bireishis Rabbasi (Bireishis 45:22) notes that these 300 enemies were killed in the merit of the 300 silver coins Yosef gave Binyamin.
15. And Mordechai left from before the king wearing royalty: Ticheiles, and white, and a great gold crown, and a shroud, fine linen, and purple. And the city of Shushan was shouting and happy.
According to the Halacha (Shulchan Aruch Orach Chaim, Mishnah Berura 689:16) this verse is the second of four verses read aloud by the congregation during the public reading of Megillas Esther on Purim.
The Midrash Shmuel quotes the Talmud (Eruvin 13b) that one who flees honor has honor thrust upon him, and the opposite is true of one who pursues honor. When Haman wanted to wear the royal clothes (Esther 5:6-8), he received nothing. In contrast, Mordechai, who asked for nothing, received the honor of wearing the royal clothes.
The Alshich notes that this is the first time in the story that Mordechai is dressed regally. Before, he was wearing sackcloth and ash, but Mordechai is now confident about the fate of the Jews. The Alshich continues that Mordechai had to display this confidence at this point because Haman’s decree was vague in other locations but explicit in Shushan, so Mordechai needed to demonstrate that the Jews were indeed in Achashverosh’s favor.
In Pirkei d’Rebbe Eliezer, it says that Mordechai became the king of the Jews. Perhaps this means that Mordechai received the authority that the Jews are supposed to give to their rabbis. The Talmud (Gittin 62a) even calls rabbis kings.
After Yosef revealed himself to his brothers, he sent them back to Canaan with word of his stature in Mitzrayim. At that point (Bireishis 45:22), he gifted the half-brothers with one pair of clothes each, but he gave his full brother Binyamin five pairs of clothes. The Talmud (Megillah 16b) writes that he did this in order to hint to these clothes that Mordechai, Binyamin’s descendants, would wear.
R’ Dovid Feinstein wonders why Yosef would choose this point in time to make such an allusion. He explains that Yosef intended to demonstrate to his brothers his very real appreciation for their act of selling him to slavery. A fired employee who finds a job even better than his previous boss’s may even want to thank his boss for releasing him from employment. Similarly, the righteous Yosef felt gratitude for his brothers’ part in his success and growth. By alluding to the Purim story, he foresaw that Jewish history would be a series of epochs filled with times that seemed to be the most hopeless transforming into the most productive.
The Maharil Diskin points out that there are not five items, but only four: ticheiles, white, a crown, and a shroud. He quotes the Talmud (Zevachim 18b) that defines butz as linen. Argaman implies wool. Since the two sewn together in one garment would be a violation of shatnez (“mixture of wool and linen,” see Vayikra 19:19, Devarim 22:11, and Shulchan Aruch Yoreh Deah 298-304), Mordechai was actually wearing two separate shrouds of these materials.
The M’nos HaLevi notes that the first verse to mention Mordechai by name (Esther 2:5) and the first to be customarily read aloud during the public readings of Megillas Esther on Purim (Shulchan Aruch Orach Chaim, Mishnah Berura 689:16) gives him several descriptions: Yehudi, Mordechai, ben Yair, ben Shimi, and ben Kish, He explains that “Yehudi” is a reference to kingship because Jewish royalty must come from that tribe (Bireishis 49:8-11). The Talmud (Chulin 139b) says “Mordechai” is a reference to myrrh, an ingredient in the Mishkan’s incense. This is paralleled in the ticheiles, which was an ingredient in the Mishkan’s covers (Shemos 26:1). According to the Talmud (Megillah 12b-13a), Mordechai earned his appellation of “son of Yair” by enlightening (hey’ir) the Jewish people regarding prayer, which is paralleled in the white clothes he wears. He is called the “son of Shimi” because his own prayers were heard (shema) by H-Shem. This is paralleled in the crown which represents the King of king’s powerful reaction to the requests of the righteous. He is called the “son of Kish” because he knocked (hikish) at the Gates of Mercy. This is paralleled in the linen and purple because they are the colors of nobility – those precious few who are allowed into the Palace.
linen and purple
The Vilna Gaon writes that all of these article are also related to the clothing one should wear during prayer. He writes that the royalty relates to the talis worn when we pray; ticheilis relates to the ticheilis-dyed fringes of the tzitzis; the white relates to the undyed white fringes of the tzitzis; the crown relates with the head tefillin; the wool robe relates to the straps of the head tefillin; and the purple relates to the arm tefillin.
Rav Galico also related to Mordechai’s clothes here to his and Shushan’s earlier actions. In reward for his having previously worn sackcloth (Esther 4:1), he now wears royalty; in reward for putting ash (Ibid.) on his head, he now wears a crown; in reward for Shushan being worried and confused about Haman’s decree (Esther 3:15), it is now happy.
The Rema adds that there are four aspects make a man’s life complete: wealth, health, perfection of character, and knowledge of and closeness to H-Shem. Mordechai acquired all of these, as can be seen from this verse: wealth relates to royalty, health relates to ticheiles, character development relates to humble linen, and knowledge and faith is related to the crown.
Rav Samson Raphael Hirsch (Collected Writings, Volume III, 180-1) writes that purple is historically symbolic of royalty. Ticheiles, on the other hand, represents a humble recognition of “the limits of our horizon.”
2. And the king removed his ring that he took from Haman, and gave it to Mordechai. And Esther placed Mordechai over Haman’s house.
When Achashverosh gave his signet ring to Haman (Esther 3:4), the Midrash (Esther Rabba 7:7) showed parallels in the giving of the ring to the story of Yosef, who also received the signet ring of a gentile monarch, Pharoah. R’ Avigdor Bonchek explains that the central connection is the constant presence of an unexpected turnaround in Jewish history.
The Vilna Gaon adds that by giving his ring, Achashverosh gave to Mordechai the honor with which Haman prided himself on, besides his money.
8. And the king returned from the garden of his house to the house of the wine feast. And Haman is falling on the bed on which is Esther. And the king said, “Also to attack the queen with me in the house?!” The word went out from the mouth of the king, and Haman’s face was covered.
Rashi notes that people in those days reclined on beds or couches during meals, as was mentioned earlier (see Esther 1:16).
The Talmud (Megillah 12a) pointed out that during Achashverosh’s party in the beginning of the story, that the couches were designed to be equal in order to avoid jealousy. Here, ironically, the couch provokes the epitome of jealousy.
In a simple explanation of this verse, the Ibn Ezra writes that Haman was merely beseeching Esther, and fell from fear when Achashverosh entered.
Similarly, the Vilna Gaon states that because Haman was so deeply saddened, he could not stand.
R’ Dovid Feinstein stresses that, had Haman been simply begging for his life, he would have been on the floor, so an explanation beyond the simple understanding is in order.
The Talmud (Megillah 16a) is bothered by the verse’s use of the present tense nofal (“is falling”) instead of nafal (“fell”). It records that when Achashverosh returned from his garden, an angel was in the process of pushing Haman onto Esther’s bed. Achashverosh yelled, “Woah onto me in my house and woah onto me outside.”
R’ Avigdor Bonckek explains that the use of the present tense is meant to express the mental image in our minds like an ongoing event.
The Baal HaTurim, in his commentary on the Torah (Bereishis 48:2) points out the phrase “al hamita” (“on the bed”) is used in TaNaCh twice – here, and in reference to Yaakov giving his blessing to his grandchildren through Yosef, Menashe and Efrayim. This is meant to contrast the righteous, who lift themselves up even at their weakest moments (as Yaakov raised himself from his deathbed to bless his progeny), to the wicked, who fall even when they are at highest peak of their success (as Haman fell from the king’s grace).
The Talmud (Pesachim 100a) uses the phrase “hagam lichvosh es hamalka imi babayis” (“also to attack the queen with me in the house”) to criticize someone who follows the opinion of Rabbi A in the presence of Rabbi B when those opinions conflict. Similarly, Rabbi Paysach Krohn tells a story of the Klausenberger Rebbe who prayed one late afternoon at the grave of the tanna R’ Yehuda bar Ilai outside Meron in Eretz Yisrael. In the evening, the rebbe became unusually downcast. When he was asked about his sudden change of mood, he explained that the R’ Yehuda bar Ilai’s opinion was that mincha needed to be prayed earlier, and “hagam lichvosh es hamalka imi babayis!”
The Talmud (Sanhedrin 105a) tells us that a proof to the idea that the wicked Bilam performed magic through immoral acts is the fact that the Torah (Bamidbar 24:4) records that he called himself “fallen.” This bears a marked similarity to Haman’s situation in this verse, in which he falls. Falling onto a bed is a reference to falling into immorality.
The Maharal suggests that Haman fell over the bed because he could not see it due to his embarrassment. He refers us to the Talmud (Bava Metzia 59a) that teaches that embarrassed people behave clumsily.
Perhaps he could not see the bed because his inflated ego caused his head to be perpetually in the air, even as he is about to die.
The Ma’amar Mordechai points out that Haman knew that Achashverosh would get jealous if he saw Haman and Esther together, and, knowing that he was as good as dead already, he tried to take Esther down with himself.
The author of the website doreishtov.blogspot points out that the Talmud calls the holiday of Purim by the name, “Puraya,” which also means “bed” in Aramaic. He suggests that this event of Haman falling on Esther’s bed is more central to the story from which the holiday comes than the lots that Haman threw.
The Sfas Emes points out that Haman fell twice, once here, and again when his followers fall on the thirteenth of Adar. The Sfas Emes continues that these multiple falls were foreshadowed when Haman’s advisers said (Esther 6:13) “nafol tipol” (“falling you will surely fall”). The Sfas Emes concludes that this also foreshadows the ultimate downfall of Amalek at end of history as promised in the Torah (Bamidbar 24:20), it should be in our days.
11. And Haman took the clothing and the horse, and dressed Mordechai. And he rode him in the street of the city. And he called before him, “So will be done to the man for whom the king desires his glory.”
Perhaps the verse’s repetitious detailing of Haman’s actions alludes to more information about the story, as both the Talmud (Megillah 16a) and Midrash (Esther Rabba 10:4) detail in their own ways.
According to both sources, when Haman took the clothing and the horse to Mordechai, he found the sage teaching the laws of kemitza, the three fingersful amount of barley flour the kohanim would gather for the Temple offerings (Vayikra 2:2 and elsewhere). Rashi explains that Mordechai was discussing this topic specifically because it was the 16th of the month of Nissan, the beginning of the cycle of omer offerings.
According to the Ginzei HaMelech, they were specifically learning about the Omer in order to earn the merit to return to Eretz Yisroel in order to properly fulfill that mitzvah.
When Mordechai sees Haman coming, Mordechai warns his students to run away, but his students refuse. The Midrash has them respond that their fate should be the same as their rebbe’s. Mordechai wraps himself in a tallis, and begins to pray. While sitting and waiting for Mordechai to finish, Hamans asks the students what they are learning. They cry to him about missing the Beis HaMikdash, and explain that we would have had the kemitza of the mincha offerings to atone for us. Haman responds that this little three fingersful amount of flour pushed off the power of 10,000 loaves of silver.
A slight variant in the Midrash is that Haman is surprised that the worth of barley needed for kemitza was so little.
When Mordechai concludes praying, he tells Haman, “Wicked one! A slave who acquires something, does not his master own it?” In other words, since Mordechai was his master, the 10,000 loaves of silver Haman had offered Achashverosh for permission to destroy the Jews (Esther 3:9) did not even belong to Haman to give away.
Haman tells Mordechai to get up and get dressed and ride on the king’s horse. Mordechai tells him he must first have a haircut and bath before wearing the king’s crown. Since Esther had made a rule that all the barbershops and bathhouses were to be closed that day, Haman had to bathe Mordechai himself, and got scissors from his house to cut Mordechai’s hair.
According to the opinion that this was not the second day of Yom Tov, the Maharitz Chiyas writes that the Talmud (Moed Katan 13b) and Halacha (Shulchan Aruch Orach Chaim 531:4) allow a person to take a haircut on Chol HaMoed (if this was not, indeed, the second day of Yom Tov) if it was impossible to get earlier, as for a prisoner released on Chol HaMoed.
Furthermore, the Derash Avraham writes that Mordechai could take a haircut and bath even on Yom Tov in order to save lives.
The Vilna Gaon asks how Esther could risk so much in having the bathhouses and barbershops closed. After all, she could not have had enough advanced notice to know this event would occur. Furthermore, Esther risked giving up the guarded secret of her Jewish background.
R’ Yehonason Eibshutz answers that this was the second day of Yom Tov, so Esther calling Jewish barbers to stay home for Halachic reasons (Shulchan Aruch Orach Chaim 495:2). Esther felt she needed to strengthen this Rabbinic law because the Persian Jews were generally reluctant to follow Rabbinic decrees.
While cutting the hair, Haman was groaning. Mordechai asked, “Why are you groaning?” Haman responded that someone like himself, who is so important to the king, should not be degraded into the post of barber. Mordechai told him, “Wicked one! Were you not a barber in Kartzum for 22 years?”
The Beirach Yitzchak asks about the significance of the length of time. He answers that the Rambam (Mishneh Torah, Hilchos Melachim 1:6), in his list of people disqualified from royalty, includes a barber. In his commentary on the Mishneh Torah, Rav Yosef Karo in Kesef Mishnah explains that barbers in bygone days were responsible for administrating numerous medical treatments, many of which were repulsive and unseemly (http://www.history.com/news/history-lists/7-unusual-ancient-medical-techniques).
The Kesef Mishnah further limits this restriction to barbers who do this as a profession, not just a hobby or as a favor for someone. Therefore, answers the Beirach Yitzchak, Haman’s being a barber for such a long time indicates that it was his profession, and he could not weasel out of the fact that he was not fit for the royalty to which he aspired.
Furthermore, adds the Ginzei HaMelech, Mordechai was telling Haman that, had he remained contentedly a barber in Kartzum, his life would continue in relative peace. However, now that he had been elevated and become corrupted by power, Haman’s life would end tragically. When it was time to get on the horse, Mordechai was too weak from fasting, and had to climb on Haman’s back to alight on the horse.
Since the fast was supposed to last for three days (Esther 4:16), the Chiddushei Rashash writes that Mordechai was still fasting on this, the fourth day, because he added an extra private day of fasting for himself. The reason may be that he felt responsible for the Jews’ plight since he instigated Haman’s hatred by not bowing to him (Esther 3:5).
Given the opportunity, Mordechai kicked Haman in the posterior. Haman complained that it says in the TaNaCh (Mishlei 24:17) that one should not rejoice over the downfall of one’s enemies. Mordechai responded that this is true regarding Jews. However, regarding gentiles, the Torah (Devarim 33:29) writes that we can rejoice. Ginzei HaMelech wonders why it seems from this story that Mordechai and Esther appear to be working together to increase Haman’s humiliation. The answer could be, as the Ramban (to Bireishis 12:6) writes, some physical action is always necessary for us to fulfill a Divine decree. Therefore, Esther and Mordechai are performing physical actions to acquire something from the spiritual events then occurring.
Then, Haman begins to lead Mordechai on a horse through the streets of Shushan. An earlier Midrash (Esther Rabbah 7:7) points out that all of Rachel’s descendants are equal; just like Yosef rode in Pharoah’s second chariot through the streets of Mitzrayim (Bireishis 41:43), so too Mordechai.
The Midrash (Esther Rabba 10:5) details what everyone was saying during this procession. Mordechai was saying the verses (Tehillim 30:1-4) which praise H-Shem for elevating him, and not allowing his enemy to defeat him. Mordechai’s students were singing the next verses (ibid. 5-6), praising H-Shem for the change in the course of history that He controls for the sake of His righteous followers. Haman was saying the next verses (ibid. 7-8) bemoaning his fall from power. Esther said the next verses (ibid. 9-10) praying for success in her mission to save the Jews. The rest of the Jewish people were saying the next verses (ibid. 11-12), celebrating the changing tide from fear to jubilation.
27,000 young men led this procession, carrying pillows and golden cups and repeating Haman’s words that this is the reward for the man whom the king wishes to honor. The M’nos HaLevi explains that the purpose of these 27,000 young men was to continue this message after Haman’s voice inevitably gave out after a while.
Haman’s daughter, who was on a rooftop, dumped her chamber-pot upon her father, thinking he was Mordechai.
According to R’ Mendel Weinbach, the reason she had a chamber pot with her on the roof is that Haman had engineered Vashti’s end and the ensuing beauty contest with the goal of having the king marry his daughter. To avoid her becoming the queen, H-Shem cursed her with chronic diarrhea, so she hid from people on roof tops, always with her chamber pot. As Haman looked up to see who had done that, his daughter became ashamed, and she jumped off the roof.
The Ben Ish Chai writes that she did not recognize her own father was due to his voice becoming hoarse.
The Einei Yitzchak writes that another reason she may not have recognized her father is that Haman may have switched clothes with Mordechai in order to make sack-clothed Mordechai more presentable, and to ironically lessen his own embarrassment.
As we shall see in the next verse (Esther 6:4), Haman was on his way to the king. According to Tehilla l’Dovid, the officers used the word imo (“with him”) in regard to Mordechai instead of using his name so that Haman would not know that he is on the brink of losing power.
The Me’am Loez writes that the officers were saying that rewards were indeed given, but not to the one deserving them.
It is also said in name of the Chacham Tzvi that the Talmud (Sotah 11b) teaches that when Yosef’s brothers showed Yaakov the shirt they removed from their brother, they said “is this your son’s shirt?” (Bireishis 37:32) without mentioning Yosef’s name. Yaakov realized from their subconscious inability to say his name that they hated him, and hinted to his knowledge that they were responsible for Yosef’s disappearance. From this, the Chacham Tzvi writes that Achashverosh’s advisers used the pronoun imo instead of naming Mordechai because they hated him.
In a speech once before the Polish Parliament, a famous anti-Semite said, “we’ve done enough for the Jews.” R’ Meir Shapiro responded that this statement helped clarify our verse. It is enough for the Jew to be left alone by the gentiles. Therefore, Achashverosh’s advisers were telling the king that he had performed the greatest deed for Mordechai – he did nothing for him, thereby leaving him alone.
As Rashi said above, Haman’s motivation was fear of retribution without the king’s explicit permission.
The reason for this is, ironically, his own participation in creating a law that women have to listen to their husbands (Esther 1:22). As the Malbim wrote there, the necessity to sign such a truism into law put into question any other otherwise immutable ideas. Even a minister being disrespected did not act without the king’s command.
According to Rebbetzin Heller, the reason Haman restrains himself is that a good retaliation requires careful planning.
The Baal HaTurim (on Bireishis 43:31) points out that the word vayisapek (“and he restrained himself”) is used only twice in TaNaCh. The first is where Yosef restrains himself from revealing himself to his brothers. Just as in the Yosef story, the predicament was precarious but ended positively, so too in this story, self-restraint leads to national joy for the Jews. The Ramban’s definition (on Vayikra 19:2) of becoming holy is to restrain oneself and not to over-indulge.
R’ Avigdor Miller points out that fasting for three days is difficult, and accomplished an unprecedented amount of teshuva.
The Talmud (Yevamos 121b) uses this verse to inform us that it is difficult, although not miraculous to be without food for that long.
The Midrash (Esther Rabbah 8:7) writes that these three days corresponded with the 13th, 14th, and 15th of Nisan, which included the first day of Pesach. When questioned regarding why Pesach should be foregone, Esther pointed out that there would be no Pesach if the Jews were wiped out.
The M’nos HaLevi quotes from the Yalkut Shimoni that these three days were the 14th, 15th, and 16th of Nisan. The Ohel Moshe points out that the main difference is whether or not the Jews of Persia had the second Seder.
The Maylitz Yosher writes that the Jews were expected to fast on Pesach in order to shock them into realizing the seriousness of their predicament.
The M’nos HaLevi writes that the three days correspond to three sins regarding which Esther expects to be guilty: eat non-kosher food, submit herself to Achashverosh, and partial complicity in the death of Hasach.
Rabbeinu Bachya writes that H-Shem only challenges tzaddikim for three days. For example, when Avraham went to potentially sacrifice his son, he found Mount Moriah in three days (Bireishis 22:4). Also, when the brothers were taken by Yosef, they were imprisoned for three days (Ibid. 42:18). Furthermore, Yonah remained inside the big fish that swallowed him for three days (Yonah 2:1). R’ Dovid Feinstein writes that the three sections of the Written Law (Torah, Nevi’im, and Kesuvim) were given to three groups of Jews (Kohanim, Levi’im, and Yisroelim) for which they needed to prepare for three days (Shemos 19:11).
The Ben Ish Chai writes that the Torah affects us on three different levels: thought, speech, and action. Therefore, Esther was telling Mordechai that the Jews need to prepare these three days to perform honest repentance through thought, speech, and action.
The Ginzei HaMelech quotes the Vilna Gaon (on Bireishis 27:13) that when Rivka told the nervous Yaakov to place the blame of his upcoming deception “eilai” (“on me”), this word can be an acronym for Eisav, Lavan, and Yosef. Those may be the greatest of Yaakov’s tests in life, that came along with the blessing he gets from his father.
Also, the Ginzei HaMelech points out that these are three different types of people: Eisav represents a glutton; Lavan represents idolatry, and Yosef represents the challenge of intermarriage. These same three issues are the ones for which Jewish existence was threatened in the Purim story. Pri Tzedek quotes from the Zohar on Chukas that the three patriarchs, Avraham, Yitzchak, and Yaakov, represent three characteristics: kindness, awe, and truth. These are the polar opposites of the three characteristics which, according to the Mishnah (Avos 4:21), destroy one’s life: jealousy, lust, and honor. During these three days, then, Esther wanted the Jews to perfect themselves in these three areas.
The Ben Ish Chai points out that three days is 72 hours, and this is the gematria of chesed, (“kindness”) (8+60+4=72). Therefore, the Jews were supposed to spend these days evoking H-Shem’s Kindness.
R’ Avraham Sutton points out that 72 is also the gematria of H-Shem’s four-letter Name when each letter is spelled out with all the yuds included ([10+6+4]+[5+10]+[6+10+6]+[5+10]=72).
16. “Go gather all of the Yehudim found in Shushan and have them fast for me, and not eat, and not drink three days, night and day. Also I and my maidens will fast so. And so I will go to the king, which is not like the law. And as I will be destroyed, I will be destroyed.”
According to Me’am Loez, Esther wanted to bring the Jews together in order to contradict Haman’s slander in Esther 3:5 that the Jews were not unified.
According to Vidibarta Bam, the sale of Yosef is one opinion in the Midrash (Esther Rabbah 7:25) for the Jews’ existence to be threatened. Unity for that prayer would be the correction of this sale.
According to Nachal Eshkol, the gematria of kinos (“gather”) (20+50+6+60= 136) is the same as kol, (“voice”) (100+6+30= 136). The voice is usually symbolic throughout Torah literature of prayer, and thus indicates that Esther also requested that the Jews pray for her, as is indicated in the fact that they did so in Esther 9:31.
Why, in fact, did the verse then not say explicitly that the Jews prayed? As Rav Avigdor Miller points out in Torah Nation, if the authors of Megillas Esther would write that the Jews prayed, they would also have to write to Whom they prayed. However, since Megillas Esther regularly performs mental acrobatics to avoid using H-Shem’s Name, it did not mention the Jews’ praying.
R’ Yechezkiel Levenstein quotes the Midrash (Esther Rabbah 7:19), which writes that after the decree against the Jews, the Torah dressed in widow’s garb, the angels cried, the sun and the moon dimmed, etc. Only the prayer of Mordechai, one man, could overturn the decree. Of course, prayer is powerful, but as the Maharal points out from the Talmud (Brachos 8a), prayer together in a gathering (at least a minyan) is amplified.
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.