1 Chronicles 23:11
Jahath was the first and Zizah was the second; but Jeush and Beriah did not have many sons, so they were counted as one family and received a single assignment.
What it says
Jahath is first and Zizah second, but Jeush and Beriah are counted as one family and given a single assignment because they have few sons.
What it is doing
This verse explains how the family register is consolidated in practice.
In context
7The Gershonites: Ladan and Shimei. 8The sons of Ladan: Jehiel the first, Zetham, and Joel— three in all. 9The sons of Shimei: Shelomoth, Haziel, and Haran— three in all. These were the heads of the families of Ladan. 10And the sons of Shimei: Jahath, Zina, Jeush, and Beriah. These were the sons of Shimei— four in all. 11Jahath was the first and Zizah was the second; but Jeush and Beriah did not have many sons, so they were counted as one family and received a single assignment.