'Instructions' in the Bible

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,

the Jewish people established this celebration, making it a tradition for themselves, for their descendants, and for all who joined with them that they should not fail to observe these two days each year, based on the written instructions, and at the prescribed time.

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.