Daniel 1:4-5
1:4 young men in whom there was no physical defect and who were handsome, well versed in all kinds of wisdom, well educated and having keen insight, and who were capable of entering the king’s royal service – and to teach them the literature and language of the Babylonians.
1:5 So the king assigned them a daily ration from his royal delicacies and from the wine he himself drank. They were to be trained for the next three years. At the end of that time they were to enter the king’s service.
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.