Numbers 4:39

36 And the number of all these was two thousand, seven hundred and fifty.

37 This is the number of those of the Kohathites who did the work in the Tent of meeting, as they were numbered by Moses and Aaron at the order of the Lord.

38 And those of the sons of Gershon who were numbered by families,

39 All those from thirty to fifty years old who were able to do the work in the Tent of meeting,

40 Who were numbered by families in the order of their fathers' houses, were two thousand, six hundred and thirty.

41 This is the number of the sons of Gershon who did the work in the Tent of meeting, as they were numbered by Moses and Aaron at the order of the Lord.

42 And those of the sons of Merari who were numbered by families, in the order of their fathers' houses,