Esther 8:7-8

7Then King Xerxes said to Queen Esther and Mordecai the Jew, “I have given Esther the property of Haman, and he has been impaled on a pole because he tried to destroy the Jews.

8Now go ahead and send a message to the Jews in the king’s name, telling them whatever you want, and seal it with the king’s signet ring. But remember that whatever has already been written in the king’s name and sealed with his signet ring can never be revoked.”