Numbers 3:26-28
English Standard Version
27To Kohath belonged the clan of the Amramites and the clan of the Izharites and the clan of the Hebronites and the clan of the Uzzielites; these are the clans of the Kohathites.
28According to the number of all the males, from a month old and upward, there were 8,600, keeping guard over the sanctuary.