“There is a certain people scattered abroad and dispersed among the peoples.” Haman said that in his view, we will succeed in destroying the Jews because they are separated from one another; hence, our force against them will certainly prevail, as it causes separation between man and God. And the Creator will not help them anyway, since they are separated from Him. This is why Mordecai went to correct that flaw, as it is explained in the verse, “the Jews gathered,” etc., “to gather themselves together, and to stand for their life.” This means that they had saved themselves by uniting.