Daniel 6:15-18

Then those men went as a group to the king. They said, “Remember, O king, the law of the Medes and Persians says that no law or command given by the king can be changed.” So King Darius gave the order, and Daniel was brought in and thrown into the lions’ den. The king said to Daniel, “May the God you serve all the time save you!” A big stone was brought and placed over the opening of the lions’ den. Then the king used his signet ring and the rings of his royal officers to put special seals on the rock. This ensured that no one would move the rock and bring Daniel out. Then King Darius went back to his palace. He did not eat that night, he did not have any entertainment brought to him, and he could not sleep.