Bible Verses About Rings: Used for sealing decrees

And the king's scribes were called in the first month Nisan, on the thirteenth day of the same mouth: and they wrote, as Aman had commanded, to all the king's lieutenants, and to the judges of the provinces, and of divers nations, as every nation could read, and hear according to their different languages, in the name of king Assuerus: and the letters, sealed with his ring,

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.

And these letters which were sent in the king's name, were sealed with his ring, and sent by posts: who were to run through all the provinces, to prevent the former letters with new messages.