Genesis 30:11

and the sons of Zilpah, Leah’s servant-woman: Gad and Asher. These are the sons of Jacob who were born to him in Paddan-aram.

Of the sons of Gad, their genealogical registration by their families, by their fathers’ households, according to the number of names, from twenty years old and upward, whoever was able to go out to war,

“And He gave him the covenant of circumcision; and so Abraham was the father of Isaac, and circumcised him on the eighth day; and Isaac was the father of Jacob, and Jacob of the twelve patriarchs.