8. 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.