Rav Kook then quoted the Talmudic statement in Sanhedrin 99b that Timna wanted to marry into the family of Abraham but was not accepted. In the end, she became the concubine of Esau's eldest son. "Better to be a maidservant to this people," Timna reasoned, "than a princess of another people." As punishment for rejecting Timna, the Jewish people were cursed with the eternal enmity of Timna's son - Amalek.
This of course is the connection to the story of Purim, for Haman, the enemy of the Jews, was a descendant of Amalek. Haman's hatred of the Jews and his decree to destroy them in fact originated in the failure to convert his great-grandmother Timna. But this error was redressed in the time of Mordechai and Esther, when "Many of the peoples of the land became Jews" (Esther 8:17).