Daniel 1:7

1:7 But the overseer of the court officials renamed them. He gave ¹  Daniel the name Belteshazzar, Hananiah he named Shadrach, Mishael he named Meshach, and Azariah he named Abednego. ² 

Daniel 1:11

1:11 Daniel then spoke to the warden ³  whom the overseer of the court officials had appointed over Daniel, Hananiah, Mishael, and Azariah:

[1:7]  ¹ tc The LXX and Vulgate lack the verb here.

[1:7]  ² sn The meanings of the Babylonian names are more conjectural than is the case with the Hebrew names. The probable etymologies are as follows: Belteshazzar means “protect his life,” although the MT vocalization may suggest “Belti, protect the king” (cf. Dan 4:8); Shadrach perhaps means “command of Aku”; Meshach is of uncertain meaning; Abednego means “servant of Nego.” Assigning Babylonian names to the Hebrew youths may have been an attempt to erase from their memory their Israelite heritage.

[1:11]  ³ sn Having failed to convince the overseer, Daniel sought the favor of the warden whom the overseer had appointed to care for the young men.