Numbers 3:13 BBE

¹¹  And the Lord said to Moses,

¹²  See, I have taken the Levites out of the children of Israel to be mine in place of the first sons of the children of Israel;

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.