Genesis 30:4

Jacob's Children

³ 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.” ⁴ So Rachel gave her slave Bilhah to Jacob as a wife, and he slept with her. ⁵ Bilhah conceived and bore Jacob a son.

Bilhah

Jacob

Rachel

Genesis 16:3-4

So Abram’s wife Sarai took Hagar, her Egyptian slave, and gave her to her husband Abram as a wife for him. This happened after Abram had lived in the land of Canaan 10 years.

Genesis 21:10

So she said to Abraham, “Drive out this slave with her son, for the son of this slave will not be a coheir with my son Isaac!”

Genesis 22:24

His concubine, whose name was Reumah, also bore Tebah, Gaham, Tahash, and Maacah.

Genesis 25:1

Now Abraham had taken another wife, whose name was Keturah,

Genesis 25:6

And Abraham gave gifts to the sons of his concubines, but while he was still alive he sent them eastward, away from his son Isaac, to the land of the East.

Genesis 33:2

He put the female slaves and their children first, Leah and her children next, and Rachel and Joseph last.

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 12 sons:

2 Samuel 12:11

“This is what the Lord says, ‘I am going to bring disaster on you from your own family: I will take your wives and give them to another before your very eyes, and he will sleep with them publicly.