'Instructions' in the Bible
The king asked, "By law, what should be done to Queen Vashti in light of the fact that she has not obeyed the instructions of King Ahasuerus conveyed through the eunuchs?"
He also gave him a written copy of the law that had been disseminated in Susa for their destruction so that he could show it to Esther and talk to her about it. He also gave instructions that she should go to the king to implore him and petition him on behalf of her people.
Then Esther replied to Hathach with instructions for Mordecai:
That night the king could not sleep, so he gave instructions to bring the book of records, the chronicles, and they were read to the king.
Mordecai wrote these instructions and sent letters to all the Jewish people in all the provinces of King Ahasuerus, both near and far,
For this reason these days are called Purim, from the word Pur.Because of all the instructions in this letter as well as what they had witnessed and what had happened to them,
the Jews bound themselves, their descendants, and all who joined with them to a commitment that they would not fail to celebrate these two days each and every year according to the written instructions and according to the time appointed.
establishing these days of Purim at the prescribed time, just as Mordecai the Jew and Queen Esther had established, and just as the Jewish people had established for themselves and for their descendants. The letter included instructions for their fasting and lamentations.
The order of Esther established these instructions for Purim, and it was officially recorded.