וַיְהִ֗י באמרם [כְּאָמְרָ֤ם] אֵלָיו֙ י֣וֹם וָי֔וֹם וְלֹ֥א שָׁמַ֖ע אֲלֵיהֶ֑ם וַיַּגִּ֣ידוּ לְהָמָ֗ן לִרְאוֹת֙ הֲיַֽעַמְדוּ֙ דִּבְרֵ֣י מָרְדֳּכַ֔י כִּֽי־הִגִּ֥יד לָהֶ֖ם אֲשֶׁר־ה֥וּא יְהוּדִֽי׃
И было так, что когда они ежедневно говорили с ним, и он не послушал их, они сказали Аману посмотреть, не Мардохей ли?'слова будут стоять; ибо он сказал им, что он еврей.
Ramban
AND HE WENT OUT UNTO HIS BRETHREN. This indicates that they told him he was a Jew,83See Esther 3:4. and he desired to see them because they were his brethren. Now he looked on their burdens and toils and could not bear [the sight of his people enslaved]. This was why he killed the Egyptian who was smiting the oppressed Hebrew.