The Jews: Divided Into Twelve Tribes
Source: TTT
Genesis 35:22
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:
Genesis 49:28
These are the tribes of Israel, twelve in all, and this was what their father said to them. He blessed them, and he blessed each one with a suitable blessing.