So Esther called for Hathach, one of the king's eunuchs who had been placed at her service, and instructed him to find out the cause and reason for Mordecai's behavior.

and he wrote in the name of King Ahasuerus, and sealed it with the king's signet-ring, - and sent letters by the hand of runners on horses, riding the swift steeds used in the kings service, bred of the stud:

The runners that rode on the swift steeds used in the king's service, went forth, being urged forward and pressed on, by the word of the king, - and, the edict, was given in Shusan the palace.