Why did the Jew hater in the book of Esther convince the king to annihilate the Jews?
The Jew hater persuaded the king, Esther's husband, to annihilate the Jewish people because Satan was continually trying to destroy the Jews and thus prevent the Messiah's appearance. This was part of a satanic effort to thwart God's plan of redemption; the king issued the decree without realizing its deeper purpose.
Les explains that Esther's account is another example of Satan's ongoing strategy. Ever since the Garden of Eden, Satan has tried to thwart God's plan of redemption by prohibiting the Messiah's appearance, which means doing everything he can to destroy the Jewish people. That is why the Jewish people have suffered such terrible times in their history. In Esther, the Jew hater convinced the king, who was Esther's husband, to annihilate the Jewish people, and the king issued the decree without realizing what he was doing. Les ties this to the same satanic pattern seen when Herod decreed the killing of all the boy babies, hoping to remove the Messiah. Thus the effort against the Jews in Esther was satanically inspired to stop God's redemptive plan.
And the letters were sent by posts into all the king’s provinces, to destroy, to kill, and to cause to perish, all Jews, both young and old, little children and women, in one day, even upon the thirteenth day of the twelfth month, which is the month Adar, and to take the spoil of them for a prey.