Mordecai recorded these events, and he sent letters to all the Jews throughout the provinces of King Xerxes, near and far,
References for Esther 9:20
to have them celebrate annually the fourteenth and fifteenth days of the month of Adar
as the time when the Jews got relief from their enemies, and as the month when their sorrow was turned into joy and their mourning into a day of celebration. He wrote them to observe the days as days of feasting and joy and giving presents of food to one another and gifts to the poor.
But when the plot came to the king’s attention,a he issued written orders that the evil scheme Haman had devised against the Jews should come back onto his own head, and that he and his sons should be impaled on poles.
the Jews took it on themselves to establish the custom that they and their descendants and all who join them should without fail observe these two days every year, in the way prescribed and at the time appointed.
These days should be remembered and observed in every generation by every family, and in every province and in every city. And these days of Purim should never fail to be celebrated by the Jews—nor should the memory of these days die out among their descendants.
So Queen Esther, daughter of Abihail, along with Mordecai the Jew, wrote with full authority to confirm this second letter concerning Purim.
to establish these days of Purim at their designated times, as Mordecai the Jew and Queen Esther had decreed for them, and as they had established for themselves and their descendants in regard to their times of fasting and lamentation.