Often it takes our enemies to whip us into shape. “Rav Abba the son of Kahana said: Greater was the removal of the ring [of Achashverosh] than the 48 prophets and 7 prophetesses who prophesied for Israel, for all of them did not return them to good, yet the removal of the ring returned them to good” (Megillah 14a).
“And Haman said to King Achashverosh: There is a certain nation scattered and divided amongst the nations” (3:8). Haman was well aware of the Achilles heel of the Jewish nation, the divisiveness that so often characterizes our community. As a small nation, lacking (at that time) a homeland, such unity is much more crucial for our survival than for that of other nations. When we are divided, we are weak; and when we are weak, we are vulnerable. Haman could thus request that, “if it pleases the king, let it be written to destroy them”.