(assembly ), second of the three sons of Levi, from whom the three principal divisions of the Levites derived their origin and their name. (Genesis 46:11; Exodus 6:16) In the journeyings of the tabernacle of the sons of Kohath (Kohathites) had charge of the most holy portions of the vessels. (Numbers 4:1) ... Of the personal history of Kohath we know nothing, except that he came down to Egypt with Levi and Jacob, (Genesis 46:11) that his sister was Jochebed, (Exodus 6:20) and that he lived to the age of 133 years. (Exodus 6:18) (B.C. about 1491.)
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Smith, William, Dr. "Entry for 'Ko’hath'". "Smith's Bible Dictionary".