Daniel 6:3-4

6:3 Now this Daniel was distinguishing himself above the other supervisors and the satraps, for he had an extraordinary spirit. In fact, the king intended to appoint him over the entire kingdom. 6:4 Consequently the supervisors and satraps were trying to find some pretext against Daniel in connection with administrative matters. But they were unable to find any such damaging evidence, because he was trustworthy and guilty of no negligence or corruption.

Daniel 6:7

6:7 To all the supervisors of the kingdom, the prefects, satraps, counselors, and governors it seemed like a good idea for a royal edict to be issued and an interdict to be enforced. For the next thirty days anyone who prays to any god or human other than you, O king, should be thrown into a den of lions.