במדבר, פרק כ״ו, פסוק כ״א

As the generations of the Israelites progressed, certain family lines naturally expanded and reorganized into distinct sub-groups. The descendants of Perez experienced this growth, with his lineage splitting to form new, independent households.

This family tree ultimately divided into two primary branches. One branch stemmed from Hezron, who laid the foundation for the Hezronite family. The second branch originated from Hamul, who established the Hamulite family [ביאור שטיינזלץ].