Esther 9:29-31

So Queen Esther daughter of Abihail, along with Mordecai the Jew, wrote this second letter about Purim. Using the power they had, they wrote to prove the first letter was true. And Mordecai sent letters to all the Jewish people in the one hundred twenty-seven states of the kingdom of Xerxes, writing them a message of peace and truth. He wrote to set up these days of Purim at the chosen times. Mordecai the Jew and Queen Esther had sent out the order for the Jewish people, just as they had set up things for themselves and their descendants: On these two days the people should fast and cry loudly.