Numbers 3:32-34

English Standard Version

³² And Eleazar the son of Aaron the priest was to be chief over the chiefs of the Levites, and to have oversight of those who kept guard over the sanctuary.

³³ To Merari belonged the clan of the Mahlites and the clan of the Mushites: these are the clans of Merari. ³⁴ Their listing according to the number of all the males from a month old and upward was 6,200.