Write ye also for the Jews, as it liketh you, in the king's name, and seal it with the king's ring: for the writing which is written in the king's name, and sealed with the king's ring, may no man reverse.
Write ... in the king's name, and seal it with the king's ring. Hence, it is evident that the royal ring had a seal in it which, being affixed to any document, authenticated it with the stamp of royal authority.
Which ... may no man reverse. This is added as the reason why he could not comply with the queen's request for a direct reversal or recall of Haman's letters-namely, that the laws of the Medes and Persians, once passed, were irrevocable.