Ezra 8:19 (KJV)

And I sent them with commandment unto Iddo the chief at the place Casiphia, and I told them what they should say unto Iddo, and to his brethren the Nethinims, at the place Casiphia, that they should bring unto us ministers for the house of our God.

And by the good hand of our God upon us they brought us a man of understanding, of the sons of Mahli, the son of Levi, the son of Israel; and Sherebiah, with his sons and his brethren, eighteen;

And Hashabiah, and with him Jeshaiah of the sons of Merari, his brethren and their sons, twenty;

Also of the Nethinims, whom David and the princes had appointed for the service of the Levites, two hundred and twenty Nethinims: all of them were expressed by name.

Then I proclaimed a fast there, at the river of Ahava, that we might afflict ourselves before our God, to seek of him a right way for us, and for our little ones, and for all our substance.