The sons of Leah Jacob's first wife, which are six, and are reckoned in order, according to their birth, Reuben, Simeon, Levi, Judah, Issachar, Zebulun.
21
Then Israel journeyed on and pitched his tent beyond the tower of Eder.
22
It came about while Israel was dwelling in that land, that Reuben went and lay with Bilhah his father's concubine, and Israel heard of it. Now there were twelve sons of Jacob -
23
the sons of Leah: Reuben, Jacob's firstborn, then Simeon and Levi and Judah and Issachar and Zebulun;