'Master' in the Bible

O Belteshazzar, master of the wonder-workers, because I am certain that the spirit of the holy gods is in you, and you are troubled by no secret; this is the dream which I saw: make clear to me its sense.

There is a man in your kingdom in whom is the spirit of the holy gods; and in the days of your father, light and reason like the wisdom of the gods were seen in him: and King Nebuchadnezzar, your father, made him master of the wonder-workers, and the users of secret arts, and the Chaldaeans, and the readers of signs;