Numbers 4:27-29

New International Version - UK

²⁷ All their service, whether carrying or doing other work, is to be done under the direction of Aaron and his sons. You shall assign to them as their responsibility all they are to carry. ²⁸ This is the service of the Gershonite clans at the tent of meeting. Their duties are to be under the direction of Ithamar son of Aaron, the priest.

The Merarites

²⁹ ‘Count the Merarites by their clans and families.