These sixteen were the descendants of Jacob and Zilpah (the slave woman whom Laban gave to his daughter Leah).
(Laban assigned Zilpah to be Leah’s servant.)
The sons of Leah’s maidservant Zilpah were Gad and Asher. These were the sons of Jacob born to him in Paddan-Aram.
Asher and his sons: Imnah, Ishvah, Ishvi, Beriah, and their sister Serah. Beriah’s sons were Heber and Malchiel.
Jacob’s sons with Rachel were Joseph and Benjamin.