'Cannot' in the Bible

If it seems good to the king, let a royal decree go out from him and let it be written in the laws of Persia and Media, which cannot be repealed, that Vashti is never again to enter the presence of King Ahasuerus. Let the king give her royal position to another woman who is better than she.

Now, in the name of the king, you write what seems good to you concerning the Jewish people, and seal it with the king's signet ring, for a document written in the king's name and sealed with the king's signet ring cannot be revoked."