אֵ֣ין אֶסְתֵּ֗ר מַגֶּ֤דֶת מֽוֹלַדְתָּהּ֙ וְאֶת־עַמָּ֔הּ כַּאֲשֶׁ֛ר צִוָּ֥ה עָלֶ֖יהָ מָרְדֳּכָ֑י וְאֶת־מַאֲמַ֤ר מָרְדֳּכַי֙ אֶסְתֵּ֣ר עֹשָׂ֔ה כַּאֲשֶׁ֛ר הָיְתָ֥ה בְאָמְנָ֖ה אִתּֽוֹ׃ (ס)
에스더가 모르드개의 명한 대로 그 종족과 민족을 고하지 아니하니 저가 모르드개의 명을 양육 받을 때와 같이 좇음이더라
Sforno
ויצא משה, Moses did not stand on ceremony, using his position to await the arrival of his father-in-law at home, but he went some distance to meet the man in whose house he had received so many favours. We find that Queen Esther, similarly, did not use her elevation to Royalty as an excuse to no longer defer to Mordechai who had raised her. (Esther 2,20 “Esther continued to carry out Mordechai’s instructions as she had done when she lived under his roof.”) Joseph also did not use his exalted position to look down on his brothers. The Chief of the butlers, who had reason to be grateful to Joseph, is an example of ingratitude, as we know from Genesis 40,23, “he did not remember Joseph, in fact he erased him from his memory.”
Malbim
The third miracle was that the matter became known to Mordekhai by the providence of God, who uncovers that which is concealed. And the fourth was that even though Mordekhai did not tell Esther to say this in his name, and she listened to him in everything - as it preceded (Esther 2:20), "and Esther did according to the word of Mordekhai" - here, she changed his words and told it to the king in the name of Mordekhai.
Rabbeinu Bahya
והנה היא לאה, “and lo and behold it was Leah.” Our sages (Megillah,13) ask the obvious question: “had she not been Leah up until now?” What did the Torah mean by writing “and here it was Leah?” They answer that Yaakov had supplied Rachel with a secret code to protect himself precisely against the duplicity practiced by Lavan under the wedding canopy when the girl’s face is veiled so the groom cannot see her. When Rachel became aware of what her father was doing, she realized that her sister was going to be publicly shamed. She therefore decided to spare Leah the embarrassment and told her of the secret code. Bereshit Rabbah 71,5 phrases it thus: “Rachel made silence her trademark (vocation); as a result all her sons were able to keep secrets, on the other hand, Leah made gratitude her trademark (vocation); as a result we find that all her sons are recorded as confessing errors and giving thanks to G’d. Binyamin, a son of Rachel knew that Joseph had been sold but he kept the secret. Saul, a descendant of Binyamin is reported in Samuel 10, 16 as ואת דבר המלוכה לא הגיד לו not telling even his uncle that Samuel had told him he would become king. [The uncle had been aware that Saul had had an interview with Samuel the Seer and titular head of the nation. The prophet had told him not to worry, that the asses had been located. Ed.] Another descendant of Rachel who was distinguished by keeping silent at crucial times was Queen Esther who obeyed Mordechai’s instructions not to reveal her identity even when such a refusal resulted in the King threatening to depose her.” (Esther 2,20).
Leah’s son Yehudah confessed that he had been wrong in bringing Tamar his daughter-in-law to trial as a whore. Moreover, The Torah credits him with giving thanks to the Lord (49,8), and we find David, Yehudah’s most illustrious descendant composing innumerable hymns to G’d including Psalms 136,1 in which he asks the Jewish people to give thanks to the Lord. Another descendant of Yehudah, Daniel, was in the habit of praying to G’d as a way of giving thanks to Him (Daniel 6,11).
Leah’s son Yehudah confessed that he had been wrong in bringing Tamar his daughter-in-law to trial as a whore. Moreover, The Torah credits him with giving thanks to the Lord (49,8), and we find David, Yehudah’s most illustrious descendant composing innumerable hymns to G’d including Psalms 136,1 in which he asks the Jewish people to give thanks to the Lord. Another descendant of Yehudah, Daniel, was in the habit of praying to G’d as a way of giving thanks to Him (Daniel 6,11).