'Ring' in the Bible

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

Then were the king's scribes called in the first month, on the thirteenth day thereof; and there was written according to all that Haman commanded unto the king's satraps, and to the governors that were over every province, and to the princes of every people, to every province according to the writing thereof, and to every people after their language; in the name of king Ahasuerus was it written, and it was sealed with the king's ring.

And the king took off his ring, which he had taken from Haman, and gave it unto Mordecai. And Esther set Mordecai over the house of Haman.

Write ye also to the Jews, as it pleaseth 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.

And he wrote the name of king Ahasuerus, and sealed it with the king's ring, and sent letters by post on horseback, riding on swift steeds that were used in the king's service, bred of the stud: