NET

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.

Darby

31 to confirm these days of Purim in their fixed times, according as Mordecai the Jew and queen Esther had enjoined them, and as they had decreed for themselves and for their seed, as to the matters of the fastings and their cry.

KJV

31 To confirm these days of Purim in their times [appointed], according as Mordecai the Jew and Esther the queen had enjoined them, and as they had decreed for themselves and for their seed, the matters of the fastings and their cry.