Daniel 6:15
Then these men came by agreement to the king and said to the king, "Know, O king, that it is a law of the Medes and Persians that no injunction or ordinance that the king establishes can be changed."
Esther 8:8
But you may write as you please with regard to the Jews, in the name of the king, and seal it with the king's ring, for an edict written in the name of the king and sealed with the king's ring cannot be revoked."
Daniel 6:12
Then they came near and said before the king, concerning the injunction, "O king! Did you not sign an injunction, that anyone who makes petition to any god or man within thirty days except to you, O king, shall be cast into the den of lions?" The king answered and said, "The thing stands fast, according to the law of the Medes and Persians, which cannot be revoked."
Psalm 94:20-21
Can wicked rulers be allied with you, those who frame injustice by statute?
Daniel 6:8
Now, O king, establish the injunction and sign the document, so that it cannot be changed, according to the law of the Medes and the Persians, which cannot be revoked."