Exodus 6:16 (KJV)
And these are the names of the sons of Levi according to their generations Gershon and Kohath and Merari and the years of the life of Levi were an hundred thirty and seven years
And these are the names of the sons of Levi according to their generations Gershon and Kohath and Merari and the years of the life of Levi were an hundred thirty and seven years