Daniel 1:6

So here he informs us of the king's generosity in providing them with nourishment that was not of an ordinary kind fit for captives and slaves; instead, he gave orders for them to share in the king's table. Shortly afterward he mentions their self-control and …

And Scripture says, "And the king told Ashpenaz the chief of the eunuchs to bring in some of those from the sons of the captivity of Israel and from the seed of the king and from the princes, young men, who have no blemish, who are beautiful in appearance and are understanding in all wisdom, being well versed in knowledge, disposed to prudence, and who have in themselves the strength to stand in the house of the king, and to teach them the letters and the tongue of the Chaldeans. And the king appointed them on that very day to be nourished from the table of the king and from the wine which he drank in order for them to be nourished three years, and after these things to stand before the king. And there was among them from the sons of Judah, Daniel and Hanniah, Mishael, and Azariah." [Daniel 1:3-7] It is necessary that those who love learning to not read these things cursorily, but to prepare the mind for the things that lie before us. For the divine writings do not idly preach to us, but their admonition is meant for us and also the blessing of these prophets and the demonstration of all the things which are spoken by them are for us as well. For when Hezekiah king of Judah was sick unto death, then "Isaiah the prophet came to him and told him 'Set in order your sons and your daughters and your father's house, for you will die and you will not live.'" [2 Kings 20:1, also see Isaiah 38:1] Having been grieved at this word, "Hezekiah turned his face to the wall and prayed to the Lord saying, 'Lord remember me just as I have walked before you in truth and in faith and with a full heart and I have done what is pleasing in your presence.' And Hezekiah wept with great weeping." [2 Kings 20:1-3] After this occurred, Isaiah was sent to him a second time and he said to him, "The Lord the God of David your father says this, 'I have heard your prayer and have seen your tears. […]

Now among these were of the children of Judea, Among those youths that were selected from the rest, and brought up in the above manner, and for the above purposes, who were of the tribe of Judah, and very likely of the house of David, and of royal descent, were the four following persons: Daniel, Hananiah, Mishael, and Azariah; who are particularly mentioned, because they were the most famous and renowned of them, and are concerned in the subsequent history and account of facts: their names are expressive and significant: Daniel signifies "God is my Judge"; Hananiah may be interpreted "God is gracious to me"; Mishael is by some thought to be the same as Michael, "he who is God", or "as God"; and by others, "asked of God", by his mother, as Samuel was by Hannah, so Saadiah interprets it; and Azariah may be explained, "God is my help", or "helps me".

Now among these were of the children of Judah - That is, these were a part of those who were selected. They are mentioned because they became so prominent in the transactions which are subsequently recorded in this book, and because they evinced such extraordinary virtue in the development of the principles in which they had been trained, and in the remarkable trials through which they were called to pass. It does not appear that they are mentioned here particularly on account of any distinction of birth or rank, for though they were among the noble and promising youth of the land, yet it is clear that others of the same rank and promise also were selected, Dan 1:3. The phrase “the children of Judah” is only another term to denote that they were Hebrews. They belonged to the tribe, or the kingdom of Judah. Daniel - This name (דניאל dânı̂yê'l) means properly “judge of God;” that is, one who acts as judge in the name of God. Why this name was given to him is not known. We cannot, however, fail to be struck with its appropriateness, as the events of his life showed. Nor is it known whether he belonged to the royal family, or to the nobles of the land, but as the selection was made from that class it is probable. Those who were at first carried into captivity were selected exclusively from the more elevated classes of society, and there is every reason to believe that Daniel belonged to a family of rank and consequence. The Jews say that he was of the royal family, and was descended from Hezekiah, and cite his history in confirmation of the prophecy addressed by Isaiah to that monarch, “Of thy sons which shall issue from thee, which thou shalt beget, shall they take away; and they shall be eunuchs in the palace of the king of Babylon,” Isa 39:7. […]