Because all the firstborn are
on the day that I smote all the firstborn in the land of Egypt I hallowed unto me all the firstborn in Israel, both man and beast: mine shall they be: I am
And the LORD spake unto Moses in the wilderness of Sinai, saying,
Number the children of Levi after the house of their fathers, by their families: every male from a month old and upward shalt thou number them.
And Moses numbered them according to the word of the LORD, as he was commanded.
And these were the sons of Levi by their names; Gershon, and Kohath, and Merari.
And these are
the names of the sons of Gershon by their families; Libni, and Shimei.
And the sons of Kohath by their families; Amram, and Izehar, Hebron, and Uzziel.