Ezra 8:18-19

18And by the good hand of our 1God upon us, they brought us a man of understanding, of the sons of Mahli, the son of Levi, the son of Israel, namely, Sherebiah, with his sons and his brethren, eighteen;

19and Hashabiah, and with him Isaiah of the sons of Merari, his brethren and their sons, twenty;