9 Now in the twelfth month, which is the month of Adar, on the thirteenth day of the same, when the king’s command and edict were about to be carried out, on the very day when the enemies of the Jews hoped to gain the mastery over them, the reverse occurred: the Jews gained mastery over those who hated them.

5 The Jews struck all their enemies with the sword, killing and destroying them, and did as they pleased to those who hated them.

The Feast of Purim Inaugurated
20 And Mordecai recorded these things and sent letters to all the Jews who were in all the provinces of King Ahasuerus, both near and far, 21 obliging them to keep the fourteenth day of the month Adar and also the fifteenth day of the same, year by year, 22 as the days on which the Jews got relief from their enemies, and as the month that had been turned for them from sorrow into gladness and from mourning into a holiday; that they should make them days of feasting and gladness, days for sending gifts of food to one another and gifts to the poor.