'Revoked' in the Bible

Now you write to the Jews as you see fit, in the king’s name, and seal it with the king’s signet ring; for a decree which is written in the name of the king and sealed with the king’s signet ring may not be revoked.”

Now, O king, establish the injunction and sign the document so that it may not be changed, according to the law of the Medes and Persians, which may not be revoked.”

Then they approached and spoke before the king about the king’s injunction, “Did you not sign an injunction that any man who makes a petition to any god or man besides you, O king, for thirty days, is to be cast into the lions’ den?” The king replied, “The statement is true, according to the law of the Medes and Persians, which may not be revoked.”