The genealogical records of the Merari family expand to detail the specific ancestral houses that make up their lineage. Initially, the well-known descendants of Merari are recognized, specifically Mahli and Mushi. Soon after, a new branch is introduced into the family tree. The descendants of Jaaziah are added to the record, establishing him as another descendant of Merari, and acknowledging his direct offspring [ביאור שטיינזלץ].
Previously, historical accounts presented Mahli and Mushi as the exclusive ancestral houses within the Merari family. The current record introduces a fresh piece of history, revealing that the family of Jaaziah, which had not been mentioned before, actually joins the ranks to form an additional, distinct ancestral house within this established lineage [מצודת דוד].