Num 4:34-49 : 34 And Moses and Aaron and the chiefs of the congregation numbered the sons of the Kohathites by their families, and by the house of their fathers,
35 From thirty years old and upward even to fifty years old, every one that enters into service, for work in the tabernacle of the congregation:
36 And those that were numbered by their families were two thousand seven hundred and fifty.
37 These were they that were numbered of the families of the Kohathites, all that might do service in the tabernacle of the congregation, which Moses and Aaron numbered according to the commandment of the LORD by the hand of Moses.
38 And those that were numbered of the sons of Gershon, by their families, and by the house of their fathers,
39 From thirty years old and upward even to fifty years old, every one that enters into service, for work in the tabernacle of the congregation,
40 Even those that were numbered by their families, by the house of their fathers, were two thousand six hundred and thirty.
41 These are they that were numbered of the families of the sons of Gershon, all that might do service in the tabernacle of the congregation, whom Moses and Aaron numbered according to the commandment of the LORD.
42 And those that were numbered of the families of the sons of Merari, by their families, by the house of their fathers,
43 From thirty years old and upward even to fifty years old, every one that enters into service, for work in the tabernacle of the congregation,
44 Even those that were numbered after their families, were three thousand two hundred.
45 These are they that were numbered of the families of the sons of Merari, whom Moses and Aaron numbered according to the word of the LORD by the hand of Moses.
46 All those that were numbered of the Levites, whom Moses and Aaron and the chiefs of Israel numbered, by their families, and by the house of their fathers,
47 From thirty years old and upward even to fifty years old, every one that came to do the service of ministry, and the service of the burden in the tabernacle of the congregation,
48 Even those that were numbered of them were eight thousand five hundred and eighty.
49 According to the commandment of the LORD they were numbered by the hand of Moses, every one according to his service, and according to his burden: thus they were numbered, as the LORD commanded Moses.