John Wesley on Esther 8:9

Then - Which was above two months after the former decree. All which time God suffered the Jews to lie under the error of this dreadful day, that they might be more throughly humbled for, and purged from those many and great sins under which they lay; that they might be convinced of their great sin and folly in the many offers they had had of returning to their native country, by which means being dispersed in the several parts of this vast dominion, they were like to be a very easy prey to their enemies, whereas their brethren in Judea were in a better capacity to preserve themselves: and for the greater illustration of God's glorious power, and wisdom, and goodness, in giving his people such an admirable and unexpected deliverance.