Genesis 46:25

These were the sons of Bilhah, whom Laban gave to his daughter Rachel. She bore to Jacob: seven persons.

And Laban gave his slave Bilhah to his daughter Rachel as her slave.

Then she said, “Here is my slave Bilhah. Go sleep with her, and she’ll bear children for me so that through her I too can build a family.”

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 12 sons:

The sons of Rachel’s slave Bilhah
were Dan and Naphtali.

Reuben, Simeon, Levi, and Judah;

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These are the sons of Bilhah, which Laban gave unto Rachel his daughter, and she bare these unto Jacob: all the souls were seven.

And Laban gave his slave Bilhah to his daughter Rachel as her slave.

Then she said, “Here is my slave Bilhah. Go sleep with her, and she’ll bear children for me

so that through her I too can build a family.”

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 12 sons:

Reuben, Simeon, Levi, and Judah;

The sons of Rachel’s slave Bilhah
were Dan and Naphtali.