Daniel 1:21

Cyrus; and also to the third, (Chap. x) and of course during the whole of the captivity. (Worthington) — He was maintained in power by the conqueror of Babylon, chap. vi. 18., and xiv. 1. He first displayed his sagacity in the cause of Susanna, (Chap. xiii.; Calmet) whose history was placed at the head of the book, in Theodotion, (St. Jerome in Isaias iii. 1.) as in its natural order. (Calmet)

Verses 17-21 Daniel and his fellows kept to their religion; and God rewarded them with eminence in learning. Pious young persons should endeavour to do better than their fellows in useful things; not for the praise of man, but for the honour of the gospel, and that they may be qualified for usefulness. And it is well for a country, and for the honour of a prince, when he is able to judge who are best fitted to serve him, and prefers them on that account. Let young men steadily attend to this chapter; and let all remember that God will honour those who honour him, but those who despise him shall be lightly esteemed.