'Edict' in the Bible

All of the royal administrators, prefects, regional authorities, scribes, and governors have concluded that the king should establish and enforce an edict that anyone who prays to any god or man for the next 30 days (except to you, your majesty) is to be thrown into the lions' pit.

So King Darius signed the edict contained in the written document.

So they approached the king and asked, "Didn't you sign an edict that for the next 30 days if anyone prays to any god or man, except to you, your majesty, he would be thrown into the lions' pit?" The king responded, "The decree has been established, in accordance with the laws of the Medes and Persians that can't be repealed."

But the men who had gone as a group to the king told him, "Remember, your majesty, that according to the laws of the Medes and Persians, any decree or edict that the king establishes cannot be repealed."