פירוש על אסתר 9:29

With all the power [of their position]. The power of the miracle of Achashveirosh,¹⁸Maseches Megillah 19a. of Haman, of Mordechai and of Esther.¹⁹Each one was instrumental in the miracle.

A second time. In the second year they again sent letters that they should celebrate Purim.