Daniel 6:15-18

Then these men approached the king, and said to the king, “Know, O king, that it is the law of the Medes and Persians that no decree or statute which the king establishes may be changed.” So the king gave the command, and they brought Daniel and cast him into the den of lions. But the king spoke, saying to Daniel, “Your God, whom you serve continually, He will deliver you.” Then a stone was brought and laid on the mouth of the den, and the king sealed it with his own signet ring and with the signets of his lords, that the purpose concerning Daniel might not be changed. Now the king went to his palace and spent the night fasting; and no musicians were brought before him. Also his sleep went from him.