Numbers 3:45

Take the Levites in place of all the first sons of the children of Israel, and the cattle of the Levites in place of their cattle; the Levites are to be mine; I am the Lord.

Numbers 3:12

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;

Numbers 3:40-41

And the Lord said to Moses, Let all the first male children be numbered, and take the number of their names.

Treasury of Scripture Knowledge did not add

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain