Esther 9:24

21 to enjoin those who they should keep the fourteenth day of the month Adar, and the fifteenth day of the same, yearly,

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

23 The Jews undertook to do as they had begun, and as Mordecai had written to them;

24 because Haman the son of Hammedatha, the Agagite, the enemy of all the Jews, had plotted against the Jews to destroy them, and had cast Pur, that is the lot, to consume them, and to destroy them;

25 but when [the matter] came before the king, he commanded by letters that his wicked device, which he had devised against the Jews, should return on his own head, and that he and his sons should be hanged on the gallows.

26 Therefore they called these days Purim, after the name of Pur. Therefore because of all the words of this letter, and of that which they had seen concerning this matter, and that which had come to them,

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