And the sons of Bilhah, Rachel's handmaid; Dan, and Naphtali:
Genesis 30:4-8
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and she giveth to him Bilhah her maid-servant for a wife, and Jacob goeth in unto her;
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and Bilhah conceiveth, and beareth to Jacob a son,
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and Rachel saith, 'God hath decided for me, and also hath hearkened to my voice, and giveth to me a son;' therefore hath she called his name Dan.
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And Bilhah, Rachel's maid-servant, conceiveth again, and beareth a second son to Jacob,
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and Rachel saith, 'With wrestlings of God I have wrestled with my sister, yea, I have prevailed;' and she calleth his name Napthali.
Genesis 37:2
These [are] births of Jacob: Joseph, a son of seventeen years, hath been enjoying himself with his brethren among the flock, (and he [is] a youth,) with the sons of Bilhah, and with the sons of Zilpah, his father's wives, and Joseph bringeth in an account of their evil unto their father.
Genesis 46:23-25
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And sons of Dan: Hushim.
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And sons of Naphtali: Jahzeel, and Guni, and Jezer, and Shillem.
25
These [are] sons of Bilhah, whom Laban gave to Rachel his daughter; and she beareth these to Jacob -- all the persons [are] seven.