Esther, the last of the historical books, contains an early example of Jewish persecution. Esther, a Jewess, is chosen as the new queen for Ahasuerus, the king of Persia. Her uncle Mordecai has incurred the enmity of Haman, the evil court favorite, and so brought the threat of death to his people. Esther, through her position, is able to avert the tragedy and save her people.

Esther 9

9:27 The Jews ordained, and took upon them, and upon their seed, and upon all such as joined themselves unto them, so as it should not fail, that they would keep these two days according to their writing, and according to their appointed time every year;