Numbers 3:14-16

Amplified Bible

¹⁴ Then the Lord spoke to Moses in the Wilderness of Sinai, saying, ¹⁵ “Number the sons of Levi by their fathers’ households, by their families (clans). You shall number every male from a month old and upward.” ¹⁶ So Moses numbered them just as he was commanded by the word (mouth) of the Lord.