'Ring' in the Bible

And the king took his ring from his hand and gave it to Haman, the son of Hammedatha the Agagite, the hater of the Jews.

Then on the thirteenth day of the first month, the king's scribes were sent for, and they put in writing Haman's orders to all the king's captains and the rulers of every division of his kingdom and the chiefs of every people: for every division of the kingdom in the writing commonly used there, and to every people in the language which was theirs; it was signed in the name of King Ahasuerus and stamped with the king's ring.

And the king took off his ring, which he had taken from Haman, and gave it to Mordecai. And Esther put Mordecai over the family of Haman.

So now send a letter about the Jews, writing whatever seems good to you, in the king's name, and stamping it with the king's ring: for a writing signed in the king's name and stamped with the king's ring may not be changed.

The letters were sent in the name of King Ahasuerus and stamped with his ring, and they were taken by men on horseback, going on the quick-running horses used for the king's business, the offspring of his best horses: