Jacob had twelve sons with his four wives. With Leah, he had Ruben, Simeon, Levi, Judah, Issachar, and Zebulon. With Bilhah, a handmaid of Rachael, Jacob had Dan and Naphtali. With Ziphah ...

But when are the sons of Israel (Jacob) first called the 12 tribes of Israel? In Genesis 49, Jacob has grown old and is about ...