Daniel 6:15
Then these men came as group to the king and {said}, "Recall, O king, that [with respect to] [the] law of [the] Medes and Persians that {any} decree or edict that the king establishes cannot be changed."
Esther 8:8
Write {as you see fit} concerning the Jews in the name of the king, and seal [it] with the king's signet ring; for a decree that is written in the name of the king and sealed with the king's signet ring cannot be revoked."
Daniel 6:12
Then they approached {and spoke with the king} concerning the edict of the king, "{Did you not sign an edict} that any person who would seek [anything] from any God or human within thirty days except from you, O king, would be thrown into {the lion pit}?" The king answered and said, "The matter [as you have just stated] is certain according to [the] law of [the] Medes and Persians which cannot be revoked."
Psalm 94:20-21
Can there be allied with you a throne of destruction, one that forms trouble based on statute?
Daniel 6:8
Now, O king, establish the edict and you must sign the document [so] that [it] cannot be changed, according to [the] law of [the] Medes and Persians which cannot be revoked."