יז בְּיוֹם–שְׁלשָׁה עָשָׂר לְחֹדֶשׁ אֲדָר וְנוֹחַ בְּאַרְבָּעָה עָשָׂר בּוֹ וְעָשׂה אֹתוֹ יוֹם מִשְׁתֶּה וְשִׂמְחָה
17. On the thirteenth day of Adar, and [they] were relieved on the fourteenth of it, and they made it a day of feasting and joy.
- Megillas Sesarim writes that the celebration was on the fourteenth of Adar because the conquest required more time in Shushan since it was the center of Haman’s supporters. The Jews needed more time to conquer it, and then they could celebrate.
- Rav Elisha Gallico explains that the Jews did not realize the depth and extent of the miracle until they had the opportunity to rest.
- The Sfas Emes, continuing with his perspective of seeing Megillas Esther and Purim as a war against the spiritual forces of Amalek, explains that they rested after their conquest specifically to remind the Jews that we are not celebrating our survival, but rather the destruction of Amalek. We therefore celebrate the day we rested, returned to Torah, and became spiritually renewed rather than the day of success in battle.