In the first month, which is the month of Nisan, in the twelfth year of King Ahasuerus, they cast Pur—which means “the lot”—before Haman for the day and for the month, and the lot fell on the thirteenth day of the twelfth month, which is the month of Adar.
But the Jews who were in Susa gathered on the thirteenth day and on the fourteenth and rested on the fifteenth day, making that a day of feasting and gladness.
as the days on which the Jews gained 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 presents to the poor.
the Jews established and accepted as a custom for themselves and their descendants and all who joined them that without fail they would continue to observe these two days every year, as it was written and at the time appointed.