When I was a teenager the rabbi at our Reform temple said something in his pre-Purim talk that I have never forgotten. He stated that one of his colleagues always told over the Purim story with a slight twist to the ending. This other rabbi’s conclusion had Mordechai and Haman making up, sitting under a tree together, and becoming the best of friends.
As I left adolescence I learned more and more about my Jewish heritage and discovered that Haman was a descendant of Amalek. There is a commandment in the Torah, (Deuteronomy, Chapter 25, verse 19) that once HaShem has given us the inheritance of the Land and rest from the surrounding enemies we need to erase the memory of Amalek from under the heavens. Who is this Amalek and why were we supposed to annihilate him? Amalek was the grandson of Esav, Yaacov’s twin brother, the twin brother whom he had at one time sworn to murder after his father died. That did not happen but his animosity continued and was passed down. So much so that after the Children of Israel crossed through the Sea of Reeds, while all their Egyptian pursuers drowned and the world was in awe of the Jewish nation and HaShem, Amalek came to attack. (See Exodus, Chapter17, verses 8-16) Our sages teach us that Amalek’s aspiration was not to fight the Jewish people, but rather HaShem. This is why we are commanded to eradicate him and his nation.