Esther 9:30-32

Evangelical Heritage Version

³⁰ He sent letters to all the Jews in one hundred twenty-seven provinces of the kingdom of Xerxes containing words of true peace, ³¹ telling them to observe the days of Purim at their appointed times, just as Mordecai the Jew and Queen Esther had given them the responsibility to do, and telling them to carry out the directions about their fasts and their lamentation just as they and their descendants had agreed to do.

³² The command of Esther established the directions about Purim, and they were written in a book.