Esther 9:24-26

24For 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 find the right time] to disturb and destroy them.

25But when it came before the king, he commanded in writing that Haman’s wicked scheme which he had devised against the Jews was to return on his own head, and that he and his sons should [endure what he planned for the Jews and] be hanged on the gallows.

26Therefore they called these days Purim after the name Pur (lot). And because of all the instructions in this letter, and what they had faced in this regard and what had happened to them,