Numbers 4:40 in the King James Version
Even those that were numbered of them, throughout their families, by the house of their fathers, were two thousand and six hundred and thirty.
Context
39 from thirty years old and upward even to fifty years old—everyone who entered into the service for work in the Tent of Meeting,
40 even those who were counted of them, by their families, by their fathers’ houses, were two thousand six hundred thirty.
41 These are those who were counted of the families of the sons of Gershon, all who served in the Tent of Meeting, whom Moses and Aaron counted according to the commandment of the LORD.