Daniel 4:9 (BSB)

“O Belteshazzar, chief of the magicians, I know that the spirit of the holy gods is in you and that no mystery baffles you. So explain to me the visions I saw in my dream, and their interpretation.

From Daniel 4. Also in the ESV.

Commentary on Daniel 4:9

• John Calvin (Reformed), Calvin's Commentaries on Daniel 4:9: 9. O Belteshazzar, master of the Magi, since I know that the spirit of the holy gods is in thee, and no secret can escape thee — or overcome thee, as I shall soon explain the word — relate the visions of my sleep which I saw, and their interpretation We yesterday shewed King Nebuchadnezzar to be a suppliant to Daniel, when reduced to extremity.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Daniel 4:4-18: Nebuchadnezzar, before he relates the judgments of God that had been wrought upon him for his pride, gives an account of the fair warning he had of them before they came, a due regard to which might have prevented them.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Daniel 4:9: O Belteshazzar, master of the magicians,.... So he called him, either because he excelled them in knowledge, and was greater than they, as Jacchiades; though not of their rank and order, which Daniel would have scorned to have been among, and reckoned of; so that this would have been no compliment, but a grief unto him; or because he was appointed by the king chief...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Daniel 4:9: spirit of the holy gods--Nebuchadnezzar speaks as a heathen, who yet has imbibed some notions of the true God. Hence he speaks of "gods" in the plural but gives the epithet "holy," which applies to Jehovah alone, the heathen gods making no pretension to purity, even in the opinion of their votaries (Deu 32:31; compare Isa 63:11).