Shimei had sixteen sons and six daughters. But his brothers did not have many sons, so their whole clan was not as numerous as the sons of Judah.

According to the genealogical records of their families, they had 36,000 warriors available for battle, for they had numerous wives and sons. ¹ 

Jahath was the oldest and Zizah the second oldest. Jeush and Beriah did not have many sons, so they were considered one family with one responsibility.