23-26 Jacob had twelve sons while living in northern Syria. His first-born Reuben was the son of Leah, who later gave birth to Simeon, Levi, Judah, Issachar, and Zebulun. Leah's servant Zilpah had two sons: Gad and Asher.Jacob and his wife Rachel had Joseph and Benjamin. Rachel's servant woman Bilhah had two more sons: Dan and Naphtali.