Numbers 3:15-17 New English Translation (NET Bible)
15 “Number the Levites by their clans[a] and their families; every male from a month old and upward you are to number.”[b] 16 So Moses numbered them according to the word[c] of the Lord, just as he had been commanded.[d]
The Summary of Families
17 These were the sons[e] of Levi by their names: Gershon, Kohath, and Merari.