Commentary for Esther 2:20

אֵ֣ין אֶסְתֵּ֗ר מַגֶּ֤דֶת מֽוֹלַדְתָּהּ֙ וְאֶת־עַמָּ֔הּ כַּאֲשֶׁ֛ר צִוָּ֥ה עָלֶ֖יהָ מָרְדֳּכָ֑י וְאֶת־מַאֲמַ֤ר מָרְדֳּכַי֙ אֶסְתֵּ֣ר עֹשָׂ֔ה כַּאֲשֶׁ֛ר הָיְתָ֥ה בְאָמְנָ֖ה אִתּֽוֹ׃ (ס)

Esther had not yet made known her kindred nor her people; as Mordecai had charged her; for Esther did the commandment of Mordecai, like as when she was brought up with him—

Rashi on Esther