Genesis 35:21

19Rachel died, and was buried on the way to Ephrath (also called Bethlehem).

20Jacob set up a pillar on her grave. The same is the Pillar of Rachel’s grave to this day.

21Israel traveled, and spread his tent beyond the tower of Eder.

22While Israel lived in that land, Reuben went and lay with Bilhah, his father’s concubine, and Israel heard of it. Now the sons of Jacob were twelve.

23The sons of Leah: Reuben (Jacob’s firstborn), Simeon, Levi, Judah, Issachar, and Zebulun.