1 CHRONICLES 9
2 Now the first inhabitants that dwelt in their possessions in their cities were, the Israelites, the priests, Levites, and the Nethinim.
Were the Gibeonites (Josh. 9:27) the descendants of the Nethinim?
They were formally given by David to the Levites to be their servants and so were called Nethinim ' the given ones'
..of the Nethinim, whom David and the princes had appointed for the service of the Levites, 220 Nethinim: all of them were expressed by name Ezra 8: 20.
and set apart for the service of the temple - Josephus refers to them as temple servants.
Also we certify you, that touching any of the priests and Levites, singers, porters, Nethinim, or ministers of this house of Elohim, it shall not be lawful to impose toll, tribute, or custom, upon them - Ezra 7;24.
No reference to the Nethinim appears in the New Testament It is probable they became indistinct, merging into the general body of the Jewish people.