Esther 9:29-31

29Then Queen Esther, the daughter of Abihail, with Mordecai the Jew, wrote with full authority to confirm this second letter about Purim.

30And Mordecai sent letters to all the Jews, to the one hundred and twenty-seven provinces of the kingdom of Ahasuerus, with words of peace and truth,

31to confirm these days of Purim at their appointed time, as Mordecai the Jew and Queen Esther had prescribed for them, and as they had decreed for themselves and their descendants concerning matters of their fasting and lamenting.