John Gill's Exposition of the Whole Bible
1 Chronicles 15:4
Ver. 4-10. And David assembled the children of Aaron, and the Levites. Whose business it was to bear the ark when there was any occasion for it: and from hence to the end of 1 Chronicles 15:10 an account is given of the Levites, and their number employed in this affair:
of the sons of Kohath; a son of Levi, that is, of his posterity; for his immediate sons, and so those of the rest after mentioned, had been dead ages ago; the principal of those, at this present time, was Uriel, and his kindred, or those of the same family with him, were one hundred and twenty: of those of Merari, another son of Levi, the chief was Asaiah, with two hundred and twenty of his relations: of those of Gershon, another son of Levi, was Joel, and his brethren were one hundred and thirty: of the posterity of Elizaphan, a grandson of Kohath, Exodus 5:18, the most noted was Shemaiah, who had two hundred of his family with him: and of those of Hebron, the son of Kohath, Exodus 6:18, Eliel was the most famous, and he had eighty of his kindred with him: and of those of Uzziel, another son of Kohath in a different line from Elizaphan, who also was a son of Uzziel, was Amminadab the chief, who had one hundred and twelve of his kindred with him: the number of Levites, in all, gathered together, were eight hundred and sixty two, besides their chiefs.