Daniel 2:28

“But there is a God in heaven that revealeth secrets, etc.] By this Daniel meant to inform the king that there was but one God, in opposition to the notion of polytheism, that obtained among the Heathens; that this one God is in heaven, and presides over all persons and things on earth; and that to him alone belongs the revelation of secrets, and not to Heathen gods, or to any magician, astrologer, etc.; and of this kind was the king’s dream, a secret impenetrable by men: and maketh known to the king Nebuchadnezzar what shall be in the latter days: in the latter days of his monarchy, which should be subverted, and succeeded by another; and in ages after that, during the Persian, Grecian, and…”

“God--in contrast to "the wise men," &c. (Dan 2:27). revealeth secrets-- (Amo 3:7; Amo 4:13). Compare Gen 41:45, Zaphnath-paaneah, "revealer of secrets," the title given to Joseph. the latter days--literally, "in the after days" (Dan 2:29); "hereafter" (Gen 49:1): It refers to the whole future, including the Messianic days, which is the final dispensation (Isa 2:2). visions of thy head--conceptions formed in the brain.”

“But there is a God in heaven that revealeth secrets - One of the principal objects contemplated in all that occurred respecting this dream and its interpretation was, to direct the mind of the monarch to the true God, and to secure the acknowledgment of his supremacy. Hence, it was so ordered that those who were most eminent for wisdom, and who were regarded as the favorites of heaven, were constrained to confess their entire inability to explain the mystery. The way was thus prepared to show that he who “could” do this must be the true God, and must be worthy of adoration and praise. Thus prepared, the mind of the monarch was now directed by this pious Hebrew youth, though a captive, to a…”

“What shall be - Observe the prophet's wisdom, he does not fall abruptly upon the dream, but first prepares this lofty king for it, and by degrees labours to win him to the knowledge of the true God. Daniel 2:30”

“2:28 a God in heaven: Daniel proclaimed one true God who rules all things (2:20-21), not a limited local deity such as the ones the Babylonians worshiped. The God of Daniel’s ancestors (2:23) is the God in heaven who reveals secrets. The Babylonian gods could not do this. • what will happen: In the ancient world, dreams were often understood as revealing the future.”

“a God: Psa 115:3; Mat 6:9 that revealeth: Dan 2:18, Dan 2:47; Gen 40:8, Gen 41:16; Isa 41:22, Isa 41:23; Amo 4:13 maketh known: Chal, hath made known in the: Dan 10:14; Gen 49:1; Num 24:14; Deu 4:30, Deu 31:19; Isa 2:2; Jer 30:24, Jer 48:47; Eze 38:8, Eze 38:16; Hos 3:5; Mic 4:1, Mic 4:2; Ti2 3:1; Heb 1:1; Pe2 3:3 Daniel 2:29”