Midrash su Ester 10:78

And it came to pass in the days of Ahasuerus. R. Levi said: "He was the brother of a head and the coeval associate of a head. The brother of a head, i.e., the brother of Nebuchadnezzar, the wicked, who was called head, as it is said (Dan. 2, 38) Thou art the godhead. And the coeval associate of a head — what Nebuchadnezzar had done, he had intended to do. Nebuchadnezzar had killed, he had intended to kill; Nebuchadnezzar had destroyed; he had the intention, and so reads the passage (Ezra 4, 1) In the beginning of the reign of Ahasuerus, they wrote slanders on the inhabitants of Judea and Jerusalem." Samuel said: "[Ahasuerus has the meaning of black i.e.] in his days the faces of the Jews were black as the bottoms of pots." R. Chanina said: "[Ahasuerus has the meaning of 'woe to his head' (Ach rosh). Whoever mentioned his name said 'Woe to his head.' " R. Jochanan said: "[It has the meaning of 'poor' (rosh)] His taxes were so heavy that men became poor, as it is said (Est. 9, 1) And King Ahasuerus imposed a tribute upon his land." (Ib. 1)

“Behold, Boaz came from Bethlehem, and he said to the reapers: May the Lord be with you. They said to him: May the Lord bless you” (Ruth 2:4).
“Behold, Boaz came from Bethlehem” – Rabbi Tanḥuma said in the name of the Rabbis: There are three matters that the earthly court decreed and the supernal court agreed with them, and these are: To greet another with the name of God, the Scroll of Esther, and tithes. Greeting others, from where is it derived? It is as it is stated: “That think to cause My people to forget My name” (Jeremiah 23:27). When did they think to do so? It was during the days of Atalyahu. The Rabbis say: It was during the days of Ḥananya, Mishael, and Azarya. Rabbi Ḥananya said in the name of Rabbi Yehuda ben Rabbi Simon: It was during the days of Mordekhai and Esther. But Boaz and his court had arisen and instituted to greet another with the name of God, as it is stated: “Behold, Boaz came from Bethlehem, and he said to the reapers: May the Lord be with you.” Likewise, the angel said to Gideon: “The Lord is with you, mighty man of valor” (Judges 6:12).
The Scroll of Esther, from where is it derived? Rabbi Yirmeya said in the name of Rabbi Shmuel bar Yitzḥak: What did Mordekhai and Esther do? They wrote letters and sent them to all the residents of the Diaspora: Do you accept upon yourselves “to observe these two days” (Esther 9:27)? [The residents of the Diaspora] sent and said [in response]: Are our problems with Haman not enough, that you impose upon us to observe these two days?¹⁵⁴They were afraid that their celebration would arouse the ill will of the gentiles. They said to them: If you are afraid of this matter, it is written among the volumes, as it is stated: “[All the acts of his power and his might, and the full account of the greatness of Mordekhai, how the king advanced him,] are they not written in the book of chronicles [of the kings of Media and Persia]?” (Esther 10:2). What did they do? They wrote a second letter and sent it to them, “this second letter of Purim” (Esther 9:29).
Rabbi Ḥelbo said in the name of Rabbi Shmuel bar Naḥman: There were eighty-five elders, among them thirty-plus prophets who were distressed over this verse: “These are the commandments that the Lord commanded Moses” (Leviticus 27:34) – “these” [indicates that] one may not add and one may not subtract, and a prophet is not permitted to introduce anything new from now on; and Mordekhai and Esther are asking us to take upon ourselves something new? [They were distressed] until the Holy One blessed be He enlightened them and they found it written in the Torah, in the Prophets, and in the Writings:¹⁵⁵They found an allusion to the writing of the book of Esther, and therefore were no longer concerned that the observance of Purim was considered a forbidden addition to the Torah. In the Torah, as it is written: “Write this as a memorial in the book” (Exodus 17:14). In the Prophets, as it is written: “They who feared the Lord spoke one with another; and the Lord heeded, and heard, and it was written in the book [of remembrance]” (Malachi 3:16). In the Writings, as it is written: “Are they not written in the book of chronicles” (Esther 10:2). Rav, Rabbi Ḥanina, Rabbi Yonatan, bar Kappara, and Rabbi Yehoshua ben Levi said: This scroll was not stated by the court,¹⁵⁶It was not the court in the time of Mordekhai and Esther that first introduced the book of Esther. but rather was stated at Sinai, but there is no chronological order to the Torah.¹⁵⁷Therefore, it does not appear in writing until the book of Esther. From where is it derived that the Holy One blessed be He agreed with them? Rav said: “The Jews fulfilled and received [vekibbelu]” (Esther 9:27), vekibbelu (pl.) is not written, vekibbel (sing.) is written; the master of the Jews received it.¹⁵⁸The word vekibbelu is written without the concluding vav, such that it can be read in the singular. This is an allusion to the fact that Moses received it at Sinai.
Tithes, from where are they derived? It is as Rabbi Berekhya said in the name of Rabbi Keritzeppa: Due to the sin of [failing to separate] teruma and tithes, they were exiled. Shimon bar Abba said in the name of Rabbi Yoḥanan: When they were exiled they were exempted, and they obligated themselves. What did the members of the Great Assembly do? They wrote a scroll¹⁵⁹Stating that they were obligating themselves to separate teruma and tithes even though they were exempt by Torah law. and unfurled it in the Temple courtyard, and in the morning they found it signed; that is what is written: “For all this we make a covenant, and write it, and it is signed” (Nehemiah 10:1). One verse says: “It is signed [al heḥatum (sing.)]” (Nehemiah 10:1), and one verse says: “It is signed [al haḥatumim (pl.)]” (Nehemiah 10:2). How so? Rather, al heḥatum is the supernal court, and al haḥatumim is the earthly court. Some say, the proscription of Jericho as well:¹⁶⁰Following the capture of Jericho, Joshua declared all its spoils proscribed. So said the Holy One blessed be He to Joshua: “Israel has sinned [and they have even transgressed My covenant; they have also taken from the proscribed spoils]” (Joshua 7:11). Was it not Joshua who issued the decree? This teaches that the Holy One blessed be He, too, agreed with him.¹⁶¹When one of the Israelites took from the spoils, God said that they had “transgressed My covenant.”

“There was a Judean man in the Shushan citadel, and his name was Mordekhai, son of Ya'ir, son of Shimi, son of Kish, a Benjamite” (Esther 2:5).
“There was a Judean man [ish] in the Shushan citadel” – ish teaches that Mordekhai, in his generation, was the equivalent of Moses, in his generation, as it is written about him: “And the man [veha’ish] Moses was very humble” (Numbers 12:3). Just as Moses stood in the breach, as it is written: “He said He would destroy them, were it not for Moses His chosen one, who stood before Him in the breach…” (Psalms 106:23); also Mordekhai did likewise: “A seeker of good for his people and spokesman of peace for all his descendants” (Esther 10:3).
Just as Moses taught Torah to Israel, as it is written: “See, I have taught you statutes and ordinances” (Deuteronomy 4:5), also Mordekhai did so, as it is written: “Matters of peace and truth” (Esther 9:30), and as it is written: “Acquire truth and do not sell” (Proverbs 23:23).
“And his name was Mordekhai” (Esther 2:5) – the wicked precede their names: “Naval was his name” (I Samuel 25:25); “Sheva ben Bikhri was his name” (II Samuel 20:21). However, the righteous, their names precede them: “And his name was Manoaḥ” (Judges 13:2); “And his name was Kish” (I Samuel 9:1); “And his name was Elkana” (I Samuel 1:1); “And his name was Boaz” (Ruth 2:1); “And his name was Mordekhai.” It is because they are similar to their Creator, as it is written: “But by My name, the Lord, I was not known by them” (Exodus 6:3).
“Judean” – why was he called Judean? Was he not a Benjaminite?⁶Mordekhai is identified as coming from the tribe of Benjamin in Esther 2:5. It is because he unified the name of the Holy One blessed be He⁷Actions which assert that there is only one God are referred to as “unifying the name.” before all creatures; that is what is written: “[And Mordekhai] would not bow and would not prostrate himself” (Esther 3:2). Was he contrary and violating the king’s decree? Rather, when Aḥashverosh commanded [everyone] to prostrate themselves to Haman, he [Haman] carved an idol [and set it] over his heart, intending that they prostrate themselves to the idol.
When Haman saw that Mordekhai would not prostrate himself to him, he was filled with fury. Mordekhai said to him: ‘There is a Master who exalts over all the exalted; how can I forsake him and prostrate myself to an idol?’ Because he unified the name of the Holy One blessed be He, he is called Judean [Yehudi], meaning by himself [yeḥidi].⁸Just as God is only one [yeḥidi] so was Mordekhai called yeḥidi.
Some say that he was the equivalent of Abraham in his generation. Just as Abraham allowed himself to be put into the fiery furnace and went about causing people to acknowledge the greatness of the Holy One blessed be He – that is what is written: “And the souls they had gotten in Ḥaran” (Genesis 12:5), so too, Mordekhai, in his time, people acknowledged the greatness of the Holy One blessed be He. That is what is written: “Many of the peoples of the land became Jews, as the fear of the Jews had fallen upon them” (Esther 8:17). He unified the name of the Holy One blessed be He, and sanctified it. Therefore, he is called yehudi, as it is written: “A Judean [yehudi] man” – don’t read it as yehudi, but rather, as yeḥidi.

“On each day, Mordekhai would walk before the courtyard of the harem, to find out how Esther was, and what would be done with her” (Esther 2:11).
“On each day, Mordekhai would walk before the courtyard of the harem” – [to give her the opportunity] to ask about her blood stains and her menstrual status.¹⁵According to the midrash, Mordekhai was the head of the Sanhedrin and Esther would ask him halakhic questions about her status as a menstruant. “To find out how Esther was” – that they should not cast any spells of sorcery upon her. Rabbi Yaakov bar Aḥa said: The Holy One blessed be He said to him: You sought to ascertain the wellbeing of one person – “to find out how Esther was”; by your life, ultimately you will seek to ascertain the wellbeing of an entire nation. That is what is written: “Seeking good for his people and speaking of peace for all his descendants” (Esther 10:3).

“And Mordekhai went out from before the king in royal dress of blue and white wool, and a great gold crown, and a robe of fine linen and purple. The city of Shushan reveled and rejoiced” (Esther 8:15).
“And Mordekhai went out from before the king in royal dress…” Rabbi Pinḥas says: Mordekhai reigned over the Jews. Just as the king wears purple, so did Mordekhai wear purple. Just as the king sets a great crown on his head, so did Mordekhai wear “a great gold crown” (Esther 8:15). Just as fear of the king is over the whole land, so was fear of Mordekhai over all of them, as it says: “For fear of Mordekhai had fallen upon them” (Esther 9:3). Just as the king’s coin is accepted in the entire land, so was Mordekhai’s coin accepted. And what was his coin? Mordekhai on one side and Esther on the other. Why? Because he was a good man and a peaceful man and sought peace, as it says: “For Mordekhai the Jew…[a seeker of good for his people and a spokesman of peace for all his descendants] (Esther 10:3). About him scripture says: “Mark the man of integrity and behold the upright one, for there is a future for the man of peace” (Psalms 37:37).

Rabbi Berekhya said: The Holy one blessed be He recorded the redemption of Israel in the Torah, as it is written: “If a stranger who is a resident among you shall prosper…” (Leviticus 25:47). “A stranger who is a resident” – that is Haman, who became great and grew rich, and became prosperous enough to weigh out ten thousand talents of silver (see Esther 3:9). He is called a resident stranger since he was a descendant of Amalek and was a stranger in Media and Persia. “And your brother becomes poor with him” (Leviticus 25:47) – these are [the people of] Israel who were destitute and poor. “And is sold to a resident stranger” (Leviticus 25:47) – that Aḥashverosh sold them to Haman, to destroy, to kill and to eliminate. “Or to an offshoot [eker] of a stranger’s family” (Leviticus 25:47) – that he made himself an object of idolatry.¹¹The midrash here follows the interpretation in Kiddushin 20a–b that an eker is a false god. According to that reading, the verse is referring to a Hebrew slave who was sold to serve in an idolatrous temple. That is what is written: “Bowing and prostrating themselves to Haman” (Esther 3:2). “After he is sold, he shall have redemption” (Leviticus 25:48) – that the Holy One blessed be He redeemed them from his [Haman’s] hand and delivered them from his decree and rescued them. “One of his brothers shall redeem him” (Leviticus 25:48) – that is Mordekhai, as it is written about him “and accepted by most of his brethren” (Esther 10:3). “Or his uncle or his cousin shall redeem him” (Leviticus 25:49) – that is Esther, who was the daughter of his [Mordekhai’s] uncle, and Israel were redeemed by her. “For I will surely erase [maḥo emḥeh] the memory of Amalek” (Exodus 17:14) – erase [maḥo] in this world, surely erase [emḥeh] in the World to Come. “The memory [zekher] of Amalek” – that is Haman. Read with regard to him, “a male [zakhar] of Amalek.”
Even Jacob our forefather alluded to it in the blessing of the tribes: “Benjamin, a wolf who will take prey. In the morning he will consume plunder” (Genesis 49:27) – that is Saul, who was the morning of Israel, as he was the first of the kings and was from the tribe of Benjamin, and [he] smote Amalek and plundered everything they had. “And in the evening will distribute booty” (Genesis 49:27) – that is Mordekhai and Esther, who arose for Israel in their exile, which resembles the evening, and distributed the booty of Haman. [Benjamin] is compared to a wolf, as the Holy One blessed be He set him to stand against the wolf – that is the kings of Media and Persia, who are compared to a wolf. That is what is written, “And behold, another beast, a second one, resembling a wolf”¹²The word in the verse, dov, is generally translated “bear.” However, when it is spelled without a vav, its meaning in Aramaic is “wolf.” In the verse from Daniel, which is written in Aramaic, dov is spelled without a vav (Etz Yosef). (Daniel 7:5). There¹³The midrash, written in Eretz Yisrael, refers here to the interpretation of the Babylonian sages, who understood the term dov in this verse as referring to a bear (see Megilla 11a; Kiddushin 72a; Avoda Zara 2b). they say that [the verse refers to] the kings of Media and Persia, who eat like a bear and have no rest like a bear and grow their hair like a bear. The Holy One blessed be He set Mordekhai and Esther to stand against them, as they were from the tribe of Benjamin, as it is written: “A wolf will take prey” (Genesis 49:27).

Rabbi Phineas said: Mordecai ruled over the Jews. Just as the king is dressed in purple, so was Mordecai dressed in purple, as it is said, "And Mordecai went forth from the presence of the king in royal apparel" (Esth. 8:15). Just as the king has a crown upon his head, so Mordecai had a crown upon his head, as it is said, "And Mordecai went forth… with a great crown of gold" (ibid.). Just as the king's fear obtains in all the land, so was the fear of Mordecai upon them, as it is said, "Because the fear of Mordecai was fallen upon them…" (Esth. 9:3). Just as the king's money is current throughout the land, || so was Mordecai's money current in all the land, as it is said, "For Mordecai was great" (Esth. 9:4). What was the money of Mordecai? On the one side was (the face of) Mordecai and on the other (the face of) Esther. Wherefore? Because he was a good man, and a man of peace and seeking the peace of his people, as it is said, "For Mordecai the Jew was next unto king Ahasuerus, and great among the Jews" (Esth. 10:3); concerning him the Scripture saith, "Mark the perfect man, and behold the upright: for the latter end of (that) man is peace" (Ps. 37:37).