'Nationality' in the Bible

Esther did not reveal [the Jewish background of] her people or her family, for Mordecai had instructed her not to do so.

Esther had not revealed her family or her people [that is, her Jewish background], just as Mordecai had instructed her; for Esther did what Mordecai told her just as when she was under his care.

But he disdained laying hands on Mordecai alone, for they had told him who the people of Mordecai were (his nationality); so Haman determined to destroy all the Jews, the people of Mordecai, who lived throughout the kingdom of Ahasuerus.