Names; that is, other names: this was done by the subtle instigation of Satan, that they might renounce their names received in circumcision, by assuming names imposed relating to the idol gods, being a profanation and a further degree of their apostacy; for Daniel had the name of Belteshazzar, or Baltasar, from the great Babylonian idol Baal or Bel, &c. This was by the king's command, and herein he put forth an act of his sovereignty. Thus Adam, Genesis 2:19,20. Thus Pharaoh did, Genesis 41:45; he gave Joseph the name of Zaphnath-paaneah. And Pharaohnechoh changed the name of Eliakim, Josiah's son, to Jehoiakim, 2 Kings 23:34. And the king of Babylon turned the name of Mattaniah to Zedekiah, 2 Kings 24:17. The Lord changed the name of Sarai to Sarah, of Abram to Abraham, of Jacob to Israel. Thus the Lord changed Simon's name to Cephas or Peter, Mark 3:16.
Related Commentaries of Daniel 1:7
Daniel 1:7
7 Unto whom the prince of the eunuchs gave names: for he gave unto Daniel the name of Belteshazzar; and to Hananiah, of Shadrach; and to Mishael, of Meshach; and to Azariah, of Abednego.