Then the king, when he heard [these] words, was sore displeased with himself, and set [his] heart on Daniel to deliver him: and he laboured till the going down of the sun to deliver him. (6:14)

Then these men assembled unto the king, and said unto the king, Know, O king, that the law of the Medes and Persians [is], That no decree nor statute which the king establisheth may be changed. (6:15)