Daniel 2:18 (BSB)

urging them to plead for mercy from the God of heaven concerning this mystery, so that Daniel and his friends would not be killed with the rest of the wise men of Babylon.

From Daniel 2. Also in the ESV.

Commentary on Daniel 2:18

• 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 2:18: That they would desire mercies of the God of heaven concerning this secret,.... His view in sending for them, and informing them of this whole affair, was to engage them in prayer to God with him; even to that God that made the heaven, and dwells there, and is above all, and sees and knows what is done in earth, and rules both in heaven...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Daniel 2:18: An illustration of the power of united prayer (Mat 18:19). The same instrumentality rescued Peter from his peril (Act 12:5-12).
• Adam Clarke (Methodist), Clarke's Commentary on the Bible on Daniel 2:18: That they would desire mercies - For this Daniel had requested a little time; and doubtless both he and his three companions prayed incessantly till God gave the wished for revelation; but whether it was given that same sight, we do not know.