The Gershonite count

38And the numbered men of the sons of Gershon, by their clans and by their fathers' houses:

39from thirty years old and upward, up to fifty years old, everyone who enters the service for the work in the tent of meeting—

40And those counted from them, by their clans, by their fathers’ houses, were two thousand six hundred and thirty.

41These were the counted men of the families of the sons of Gershon, all who served in the tent of meeting, whom Moses and Aaron counted at the command of Yahweh.