Genesis 29:29

29:29 (Laban gave his female servant Bilhah to his daughter Rachel to be her servant.)

Genesis 30:4

30:4 So Rachel gave him her servant Bilhah as a wife, and Jacob had marital relations with her.

Genesis 30:7

30:7 Bilhah, Rachel’s servant, became pregnant again and gave Jacob another son.

Genesis 30:3

30:3 She replied, “Here is my servant Bilhah! Have sexual relations with her so that she can bear children for me and I can have a family through her.”

Genesis 46:25

46:25 These were the sons of Bilhah, whom Laban gave to Rachel his daughter. She bore these to Jacob, seven in all.

Genesis 35:22

35:22 While Israel was living in that land, Reuben had sexual relations with Bilhah, his father’s concubine, and Israel heard about it.

Jacob had twelve sons:

Genesis 37:2

37:2 This is the account of Jacob.

Joseph, his seventeen-year-old son, was taking care of the flocks with his brothers. Now he was a youngster working with the sons of Bilhah and Zilpah, his father’s wives. Joseph brought back a bad report about them to their father.