'Sons of Levi' in the Bible
Number the sons of Levi according to their fathers' house, by their families. You shall number them, every male from a month old and upward.
And these were the sons of Levi by their names: Gershon, and Kohath, and Merari.
Take the sum of the sons of Kohath from among the sons of Levi, according to their families, by their fathers' house,
and put fire in them, and put incense in them before Jehovah tomorrow. And it shall be the man whom Jehovah chooses, he shall be holy. You take too much upon you, sons of Levi!
And He has brought you near, and all your brothers the sons of Levi with you. And do you seek the priesthood also?
And behold, I have given the sons of Levi all the tenth in Israel for an inheritance, for their service which they serve, the service of the tabernacle of the congregation.