'Sons of Levi' in the Bible

'Number the sons of Levi by the house of their fathers, by their families; every male from a son of a month and upward thou dost number them.'

And these are sons of Levi by their names: Gershon, and Kohath, and Merari.

'Take up the sum of the sons of Kohath from the midst of the sons of Levi, by their families, by the house of their fathers;

and put in them fire, and put on them perfume, before Jehovah to-morrow, and it hath been, the man whom Jehovah chooseth, he is the holy one; -- enough of you, sons of Levi.'

And Moses saith unto Korah, 'Hear ye, I pray you, sons of Levi;

yea, He doth bring thee near, and all thy brethren the sons of Levi with thee -- and ye have sought also the priesthood!

and to the sons of Levi, lo, I have given all the tenth in Israel for inheritance in exchange for their service which they are serving -- the service of the tent of meeting.