Daniel & Friends Names

Now among these were of the children of Judah,
Daniel, Hananiah, Mishael, and Azariah:
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 Abed-nego.
Daniel 1:6,7

 "This change of names was probably made on account of the signification of the words.
Thus, Daniel signified, in the Hebrew, God is my judge;
Hananiah, gift of the Lord;
Mishael, he that is a strong God;
and Azariah, help of the Lord.

These names each having some reference to the true God, and

signifying some connection with his worship, were changed to names the definition of which bore a like relation to the heathen divinities and worship of the Chaldeans.

Thus Belteshazzar, the name given to Daniel, signified keeper of the hid treasures of Bel;
Shadrach, inspiration of the sun (which the Chaldeans worshiped); Meshach, of the goddess Shaca (under which name Venus was worshiped); and
Abed-nego, servant of the shining fire (which they also worshiped)."
Uriah Smith