On the fifteenth day... they rested. — Both the fourteenth and fifteenth days are now kept as the festival of Purim, the former day being the chief.
Related Commentaries of Esther 9:18
Esther 9:18
18 But the Jews that were at Shushan assembled together on the thirteenth day thereof, and on the fourteenth thereof; and on the fifteenth day of the same they rested, and made it a day of feasting and gladness.