Adam Clarke, on Esth 8:8

“Write ye therefore to the Jews, as it pleaseth you, in the king’s name, and seal the letters with my ring. For this was the custom, that no man durst gainsay the letters which were sent in the king’s name, and were sealed with his ring.”

“May no man reverse - Whatever had passed the royal signet could never be revoked; no succeeding edict could destroy or repeal a preceding one: but one of a similar nature to the Jews against the Persians, as that to the Persians was against the Jews, might be enacted, and thus the Jews be enabled legitimately to defend themselves; and, consequently, placed on an equal footing with their enemies.”

Imported from an open dataset — not yet checked against the printed edition.