1 Chronicles 7:1-5

The four sons of Issachar were Tola, Puah, Jashub, and Shimron. The sons of Tola were Uzzi, Rephaiah, Jeriel, Jahmai, Ibsam, and Shemuel. Each of them was the leader of an ancestral clan. At the time of King David, the total number of mighty warriors listed in the records of these clans was 22,600. The son of Uzzi was Izrahiah. The sons of Izrahiah were Michael, Obadiah, Joel, and Isshiah. These five became the leaders of clans. All of them had many wives and many sons, so the total number of men available for military service among their descendants was 36,000. The total number of mighty warriors from all the clans of the tribe of Issachar was 87,000. All of them were listed in their genealogical records.