John Gill, on Esth 9:24

“For Aman, the son of Amadathi of the race of Agag, the enemy and adversary of the Jews, had devised evil against them, to kill them and destroy them: and had cast Phur, that is, the lot.”

“Wherefore they called these days Purim, after the name of Pur,.... The lot; because of the lots cast by Haman; see Est 3:7, therefore for all the words of this letter; in obedience to what Mordecai wrote in his letter to the Jews, and because of the things contained in it: and of that which they had seen concerning this matter; with their own eyes, in the several provinces where their enemies rose up to assault them, but were destroyed by them: and what had come unto them: by report; as the fall of Haman, and advancement of Mordecai, and the favours shown to Esther and her people; all this belongs to the following verse, containing the reasons of the Jews' appointment and engagement to observe the days of Purim.”

Imported from an open dataset — not yet checked against the printed edition.