a.chas.bay is the proper name identifying Eliphelet's father in a personal-name listing.

The attested use is a proper name in a father–son identification: in 2 Samuel 23:34, the noun marked Proper identifies Eliphelet by naming his father.

1. Name in a father–son identification · dominant

   In 2 Samuel 23:34, the form is tagged as a proper noun and occurs in the clause identifying Eliphelet as a son. The APB renders the listing, “Eliphelet son of Ahasbai the Maacathite,” confirming its use as the father's name in that identification.

   2 Samuel 23:34

In the Anselm Project Bible: In 2 Samuel 23:34, the APB presents the name in “Eliphelet son of Ahasbai the Maacathite.” The original form's contribution is identified from its proper-noun tag and its place in the naming clause.