Daniel 6:15

15 Then the men went as a group to King Darius and said to him, "Remember, Your Majesty, that according to the law of the Medes and Persians no decree or edict that the king issues can be changed."

15 Then these men assembled together unto the king, and said unto the king, Know, O king, that it is a law of the Medes and Persians, that no interdict nor statute which the king establisheth may be changed.