Forasmuch as an excellent spirit - Not an excellent spirit in the sense in which that phrase is sometimes used now, as denoting a good and pious spirit, but a spirit or mind that excels; that is, that is “distinguished” for wisdom and knowledge.
Interpreting of dreams - Margin, “or, of an interpreter.” This was regarded as a great attainment, and was supposed to prove that one who could do it was inspired by the gods.
And showing of hard sentences - The meaning of enigmatical or obscure sentences. To be able to do this was supposed to indicate great attainments, and was a knowledge that was much coveted. Compare Proverbs 1:6 : “To understand a proverb, and the interpretation; the words of the wise, and their dark sayings.”
And dissolving of doubts - Margin, “or, a dissolver of knots.” So the Chaldee. This language is still common in the East, to denote one who has skill in explaining difficult subjects. “In the copy of a patent given to Sir John Chardin in Persia, we find it is addressed ‘to the Lords of lords, who have the presence of a lion, the aspect of Deston; the princes who have the stature of Tahemtenten, who seem to be in the time of Ardevon, the regents who carry the majesty of Ferribours. The conquerors of kingdoms. Superintendents that unloose all manner of knots, and who are under the ascendant of Mercury,’” etc. - Taylor’s “Fragments to Calmet’s Dict.,” No. 174. The language used here would be applicable to the explanation of any difficult and perplexing subject.
Whom the king named Belteshazzar - That is, the name was given to him by his authority (see the note at John 1:7), and it was by this name that he called him when he addressed him, Daniel 4:9.