Dan (son of Jacob) in the context of "Tribe of Dan"

The Twelve Tribes of Israel (Hebrew: שִׁבְטֵי־יִשְׂרָאֵל, romanized: Šīḇṭēy Yīsrāʾēl, lit. 'Staffs of Israel') are described in the Hebrew Bible as being the descendants of Jacob, a Hebrew patriarch who was a son of Isaac and thereby a grandson of Abraham. Jacob, later known as Israel, had a total of twelve sons, from whom each tribe's ancestry and namesake is derived: Reuben, Simeon, Levi, Judah, Dan, Naphtali, Gad, Asher, Issachar, Zebulun, Joseph, and Benjamin. Collectively known as the Israelites, they inhabited a part of Canaan—the Land of Israel—during the Iron Age. Their history, society, culture, and politics feature heavily in the Abrahamic religions, especially Judaism.

In the biblical narrative, after Moses oversaw the Israelites' departure from Egypt, he died and was succeeded by Joshua, who led the conquest of Canaan and subsequently allotted territory for all but the Tribe of Levi, which was instead dedicated 48 cities. This development culminated in the establishment of Israel and Judah, purportedly beginning with a Kingdom of Israel and Judah before splitting into the Kingdom of Israel in the north and the Kingdom of Judah in the south.

Jacob, later known as Israel, is a Hebrew patriarch of the Abrahamic religions. He first appears in the Torah, where he is described in the Book of Genesis as a son of Isaac and Rebecca. Accordingly, alongside his older fraternal twin brother Esau, Jacob's paternal grandparents are Abraham and Sarah and his maternal grandfather is Bethuel, whose wife is not mentioned. He is said to have bought Esau's birthright and, with his mother's help, deceived his aging father to bless him instead of Esau. Then, following a severe drought in his homeland Canaan, Jacob and his descendants migrated to neighbouring Egypt through the efforts of his son Joseph, who had become a confidant of the pharaoh. After dying in Egypt at the age of 147, he is supposed to have been buried in the Cave of Machpelah in Hebron.

Per the Hebrew Bible, Jacob's progeny were beget by four women: his wives (and maternal cousins) Leah and Rachel; and his concubines Bilhah and Zilpah. His sons were, in order of their birth: Reuben, Simeon, Levi, Judah, Dan, Naphtali, Gad, Asher, Issachar, Zebulun, Joseph, and Benjamin. He also had a daughter named Dinah, born to his first wife Leah. The descendants of Jacob's sons were collectively known as the Israelites, with each son being the forefather of one of the Twelve Tribes of Israel, of whom all but the Tribe of Levi were allotted territory in the Land of Israel. The Genesis narrative also states that Jacob displayed favoritism among his wives and children, preferring Rachel and her sons Joseph and Benjamin to the rest—culminating in Joseph's older brothers selling him into slavery out of resentment.

Bilhah (בִּלְהָה‎ "unworried", Standard Hebrew: Bilha, Tiberian Hebrew: Bīlhā) is a woman mentioned in the Book of Genesis. Genesis 29:29 describes her as Laban's handmaiden (שִׁפְחָה), who was given to Rachel to be her handmaid on Rachel's marriage to Jacob. When Rachel failed to have children, Rachel gave Bilhah to Jacob like a wife to bear him children. Bilhah gave birth to two sons, whom Rachel claimed as her own and named Dan and Naphtali. Genesis 35:22 expressly calls Bilhah Jacob's concubine, a pilegesh. When Leah saw that she had stopped having children, she took her servant Zilpah and gave her to Jacob like a wife to bear him children as well.

The apocryphal Testament of Naftali says that Bilhah and Zilpah's father was named Rotheus. He was taken into captivity but redeemed by Laban, Rachel and Leah's father. Laban gave Rotheus a wife named Euna, who was the girls' mother. On the other hand, the early rabbinical commentary Pirkei De-Rabbi Eliezer and other rabbinic sources (Midrash Rabba and elsewhere) state that Bilhah and Zilpah were also Laban's daughters, through his concubines, which would make them half-sisters to Rachel and Leah. Scholars believe that these attempts to make Bilhah and Zilpah appear biologically related to Abraham's family were a result of anti-foreign views in the postexilic period. It appears more likely that they were foreign like Tamar and Asenath, who were considered to be 'secondary Matriarchs'.