zab.bay is used as a proper name, appearing in a list of Bebai’s sons and as Baruch’s father.

The supplied verses use zab.bay as a proper name: once among the sons of Bebai and once in identifying Baruch by his father.

1. Personal name in lists and family identification · dominant

   Both occurrences are tagged Noun · Proper. In Ezra 10:28 the form occurs in the list of Bebai’s sons; in Nehemiah 3:20 it identifies Baruch as the son of Zabbai in the account of work near the house of Eliashib.

   Ezra 10:28Nehemiah 3:20

In the Anselm Project Bible: The APB presents the name as “Zabbai” in Ezra 10:28 and in the phrase “son of Zabbai” in Nehemiah 3:20. These renderings are confirmed by the proper-noun morphology and clause contexts.