Ezra 8:20

20 and 220 temple servants. [They were descended] from the temple servants whom David and his officials had appointed to work for the Levites. These were all listed by name.

Ezra 8:20 Meaning and Commentary

Ezra 8:20

Also of the Nethinims, whom David and the princes had
appointed for the service of the Levites
To wait upon them, and minister to them, as they did to the priests; some think those were the same with the Gibeonites, whom Joshua gave to the service of the sanctuary, and David confirmed; but others are of opinion these were different from them, and an addition to them:

two hundred and twenty Nethinims: all of them were expressed by
name;
in the history that Iddo sent of them to Ezra; and so the names of the Levites, though not here expressed, only the names of those they came with.

Ezra 8:20 In-Context

18 God was guiding us, so Iddo and his relatives brought us someone competent, Sherebiah, who was a descendant of Mahli, Levi, and Israel. They brought us 18 of Sherebiah's sons and relatives.

19 They also brought Hashabiah, Jeshaiah (who was a descendant of Merari), 20 of Jeshaiah's relatives and their sons,

20 and 220 temple servants. [They were descended] from the temple servants whom David and his officials had appointed to work for the Levites. These were all listed by name.

21 Then I announced a fast there at the Ahava River so that we might humble ourselves in the presence of our God to ask him for a safe journey for ourselves, for our little ones, and for all our goods.

22 I was ashamed to ask the king for an armed escort with cavalry to help us against an enemy attack on the way. We had already told the king, "Our God works things out for the good of everyone who dedicates his life to serving him, but his power and his anger oppose everyone who abandons him."