15. Number the sons of Levi according to their fathers' houses, after their families; every male from a month old and upward shalt thou number them.
16. And Moses numbered them, according to the commandment of Jehovah, --as he had been commanded.
17. And these are the sons of Levi by their names: Gershon, and Kohath, and Merari.
18. And these are the names of the sons of Gershon according to their families: Libni and Shimei.