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
Israel again set out and pitched his tent beyond the Tower of Eder.
22
While Israel was living in that region, Reuben went in and slept with his father’s concubine Bilhah, and Israel heard about it. Jacob had twelve sons:
23
The sons of Leah were Reuben the firstborn of Jacob, Simeon, Levi, Judah, Issachar, and Zebulun.