Numbers 3:15 BBE

¹³  For all the first sons are mine; on the day when I put to death all the first sons in the land of Egypt, I took for myself every first male birth of man and beast. They are mine; I am the Lord.

¹⁴  And the Lord said to Moses in the waste land of Sinai,

¹⁵  Let all the children of Levi be numbered by their families and their fathers' houses; let every male of a month old and over be numbered.

¹⁶  So Moses did as the Lord said, numbering them as he had been ordered.

¹⁷  These were the sons of Levi by name: Gershon and Kohath and Merari.