Esther 1:5

1:5 When those days were completed, the king then provided a seven-day banquet for all the people who were present in Susa the citadel, for those of highest standing to the most lowly. It was held in the court located in the garden of the royal palace.

Esther 3:1

Haman Conspires to Destroy the Jews

3:1 Some time later King Ahasuerus promoted Haman the son of Hammedatha, the Agagite, exalting him and setting his position above that of all the officials who were with him.

Esther 9:26-27

9:26 For this reason these days are known as Purim, after the name of pur. 9:27 Therefore, because of the account found in this letter and what they had faced in this regard and what had happened to them, the Jews established as binding on themselves, their descendants, and all who joined their company that they should observe these two days without fail, just as written and at the appropriate time on an annual basis.

Esther 9:31

9:31 to establish these days of Purim in their proper times, just as Mordecai the Jew and Queen Esther had established, and just as they had established both for themselves and their descendants, matters pertaining to fasting and lamentation.