Daniel 3:11 (BSB)

and that whoever does not fall down and worship will be thrown into the blazing fiery furnace.

From Daniel 3. Also in the ESV.

Commentary on Daniel 3:11

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Daniel 3:8-18: It was strange that Shadrach, Meshach, and Abednego, would be present at this assembly, when, it is likely, they knew for what intent it was called together. Daniel, we may suppose, was absent, either his business calling him away or having leave from the king to withdraw, unless we suppose that he stood so high in the king's favour that none durst complain of him for his noncompliance.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Daniel 3:11: And whoso falleth not down and worshippeth,.... The image; the above is the decree, this that follows the sanction of it: that he should be cast into the midst of the burning fiery furnace; See Gill on Dan 3:6.
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Daniel 3:8-12: Dan 3:8-12 The Chaldeans immediately denounced Daniel’s three friends as transgressors of the king’s command. דּנה כּל־קבל, therefore, viz., because the friends of Daniel who were placed over the province of Babylon had not, by falling down before the golden image, done it homage. That they did not do so is not expressly said, but is expressed in what follows.