The most mighty men - The generals, or chief officers of his army; not strong men, there was no need of such.

most mighty men. Chal. mighty of strength. to bind.

Daniel 3:15 Now if you be ready that at what time you hear the sound of the cornet, flute, harp, sackbut, psaltery, and dulcimer...

Acts 12:4,5 And when he had apprehended him, he put him in prison, and delivered him to four squads of soldiers to keep him...

Acts 16:23,25 And when they had laid many stripes on them, they cast them into prison, charging the jailor to keep them safely...

The Song of the Three Children
DANIEL iii. 16, 17, 18. O Nebuchadnezzar, we are not careful to answer thee in this matter. If it be so, our God whom we serve is able to deliver us from the burning fiery furnace; and He will deliver us out of thine hand, O king. But if not, be it known unto thee, O king, that we will not serve thy gods, nor worship the golden image which thou hast set up. We read this morning, instead of the Te Deum, the Song of the Three Children, beginning, 'Oh all ye works of the Lord, bless ye the Lord: praise …
Charles Kingsley—The Good News of God

Daniel
Daniel is called a prophet in the New Testament (Matt. xxiv. 15). In the Hebrew Bible, however, the book called by his name appears not among the prophets, but among "the writings," between Esther and Ezra. The Greek version placed it between the major and the minor prophets, and this has determined its position in modern versions. The book is both like and unlike the prophetic books. It is like them in its passionate belief in the overruling Providence of God and in the sure consummation of His …
John Edgar McFadyen—Introduction to the Old Testament