At the advice of her uncle, Esther kept her descent and her faith a secret. Mordecai's injunction was dictated by several motives. First of all it was his modesty that suggested secrecy. He thought the king, if he heard from Esther that she had been raised by him, might offer to install him in some high office. In point of fact, Mordecai was right in his conjecture; Ahasuerus had pledged himself to make lords, princes, and kings of Esther's friends and kinspeople, if she would but name them.
Another reason for keeping Esther's Jewish affiliations a secret was Mordecai's apprehension, that the fate of Vashti overtake Esther, too. If such were in store for her, he desired at least to guard against the Jews' becoming her fellowsuffers. Besides, Mordecai knew only too well the inimical feelings entertained by the heathen toward the Jews, ever since their exile from the Holy Land, and he feared that the Jew-haters, to gratify their hostility against the Jews, might bring about the ruin of Esther and her house.