Daniel 6:12-15

12So they approached the king and asked about his royal decree: “Did you not sign a decree that for thirty days any man who petitions any god or man except you, O king, will be thrown into the den of lions?”

The king replied, “According to the law of the Medes and Persians the order stands, and it cannot be repealed.”

13Then they told the king, “Daniel, one of the exiles from Judah, shows no regard for you, O king, or for the decree that you have signed. He still makes his petition three times a day.”

14As soon as the king heard this, he was deeply distressed and set his mind on delivering Daniel, and he labored until sundown to rescue him.

15Then the men approached the king together and said to him, “Remember, O king, that by the law of the Medes and Persians no decree or ordinance established by the king can be changed.”