Numbers 4:45-47

New International Version

⁴⁵ This was the total of those in the Merarite clans.^(A) Moses and Aaron counted them according to the Lord’s command through Moses.

⁴⁶ So Moses, Aaron and the leaders of Israel counted^(B) all the Levites by their clans and families. ⁴⁷ All the men from thirty to fifty years of age^(C) who came to do the work of serving and carrying the tent of meeting