This name was given to Daniel by the Chaldeans in the time of the captivity. (Daniel 1:7) And no doubt, the design was evil; that he might in it lose sight both of his own name, and with it the remembrance of the Lord God of his fathers. And what a change it was! Daniel, a compound of Dan, judgment; and I, E1, my God: my judgment is with God, or God is my judge. Whereas, Belteshazzar was a compound of Bel, the idol which the Babylonians worshipped; and Shassar, from Etzar, to lay up. And as the idol's name was derived from Bulat, secret, they both together implied the laying up in secret. From Daniel's history, it should seem to convey the idea, as though the name Belteshazzar was given to him in compliment, on account of his great wisdom; but there can be but little question, that the great object was, that he might, in time, forget the Lord God of Israel, and be incorporated with the Chaldeans.
See Abednego