Esther 9:20-22

20And Mordecai wrote these things, and sent letters to all the Jews near and far that were in all the provinces of king Ahasuerus,

21to establish [this] among them, that they should keep the fourteenth day of the month Adar, and the fifteenth day of the same, yearly,

22as the days on which the Jews rested from their enemies, and the month that was turned to them from sorrow to joy, and from mourning into a good day; that they should make them days of feasting and joy, and of sending portions one to another, and gifts to the poor.