In the twelfth year of the reign of King Ahasuerus, in the first month (the month Nisan), the (that is, the lot) was cast in Haman's presence to determine the best day and month to carry out his plot. The lot indicated the twelfth month, the month Adar.

since Hammedatha's son Haman, the enemy of the Jewish people, had plotted against the Jewish people to destroy them, and he had cast the (that is, the lot) to determine when to confuse and destroy them.

Therefore 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,