Daniel 2:19 (BSB)

During the night, the mystery was revealed to Daniel in a vision, and he blessed the God of heaven

From Daniel 2. Also in the ESV.

Commentary on Daniel 2:19

• John Calvin (Reformed), Calvin's Commentaries on Daniel 2:19: Here it may be gathered, that Daniel did not vacillate nor pray with his companions through any doubt upon his mind. For that sentence of James ought to come into our memory, namely, Those who hesitate, and tremble, and pray to God with difference, are unworthy of being heard.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Daniel 2:14-23: When the king sent for his wise men to tell them his dream, and the interpretation of it (Dan 2:2), Daniel, it seems, was not summoned to appear among them; the king, though he was highly pleased with him when he examined him, and thought him ten times wiser than the rest of his wise men, yet forgot him when he had most occasion for...
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Daniel 2:19: Then was the secret revealed unto Daniel in a night vision,.... That is, after Daniel and his companions had importunately sought the Lord by prayer, the secret of the king's dream, and the interpretation of it, were made known to Daniel, and to him only; he being the person designed in Providence to be raised to great honour and dignity by means of it; this...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Daniel 2:19: revealed . . . in . . . night vision-- (Job 33:15-16).