Esther 9:9

“They also killed Parshandatha, Dalphon, Aspatha, Poratha, Adalia, Aridatha, Parmashta, Arisai, Aridai and Vaizatha, the ten sons of Haman son of Hammedatha, the enemy of the Jews. But they did not lay a hand on the plunder.”

Lists the names of Haman's sons who were killed.

“Haman boasted to them about his vast wealth, his many sons, and all the ways the king had honored him and how he had elevated him above the other nobles and officials.”

Reference to Haman's sons

“"...'What have they done in the citadel of Susa?' The king answered Queen Esther, 'In the citadel of Susa, the Jews have killed and destroyed five hundred men and also the ten sons of Haman. What have they done in the rest of the provinces?'...”

Refers back to the killing of Haman's sons

“because Haman son of Hammedatha, the Agagite, the enemy of all the Jews, had plotted against the Jews to destroy them, and had cast the pur (that is, the lot) for their ruin and destruction. But when the plot came to the king’s attention, he issued written orders that the evil scheme Haman had devised against the Jews should come back onto his own head, and that he and his sons should be impaled on poles.”

Explains the reason for the execution of Haman and his sons.

“When the Lord your God gives you rest from all the enemies around you in the land he is giving you as an inheritance to possess, you shall blot out the name of Amalek from under heaven. Do not forget!”

Connects to the theme of destroying the enemies of Israel, Haman being a descendant of Agag, king of the Amalekites.