Genesis 30:9
When Leah saw that she had stopped having children, she gave her servant Zilpah to Jacob as a wife.

Genesis 16:1-3
Now Abram’s wife Sarai had borne him no children, but she had an Egyptian maidservant named Hagar. / So Sarai said to Abram, “Look now, the LORD has prevented me from bearing children. Please go to my maidservant; perhaps I can build a family by her.” And Abram listened to the voice of Sarai. / So after he had lived in Canaan for ten years, his wife Sarai took her Egyptian maidservant Hagar and gave her to Abram to be his wife.

Genesis 24:59-61
So they sent their sister Rebekah on her way, along with her nurse and Abraham’s servant and his men. / And they blessed Rebekah and said to her, “Our sister, may you become the mother of thousands upon thousands. May your offspring possess the gates of their enemies.” / Then Rebekah and her servant girls got ready, mounted the camels, and followed the man. So the servant took Rebekah and left.

Genesis 30:3-4
Then she said, “Here is my maidservant Bilhah. Sleep with her, that she may bear children for me, so that through her I too can build a family.” / So Rachel gave Jacob her servant Bilhah as a wife, and he slept with her,

Genesis 35:22-26
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 twelve sons: / The sons of Leah were Reuben the firstborn of Jacob, Simeon, Levi, Judah, Issachar, and Zebulun. / The sons of Rachel were Joseph and Benjamin. ...

Genesis 46:18
These are the sons of Jacob born to Zilpah—whom Laban gave to his daughter Leah—sixteen in all.

Genesis 21:10-12
and she said to Abraham, “Expel the slave woman and her son, for the slave woman’s son will never share in the inheritance with my son Isaac!” / Now this matter distressed Abraham greatly because it concerned his son Ishmael. / But God said to Abraham, “Do not be distressed about the boy and your maidservant. Listen to everything that Sarah tells you, for through Isaac your offspring will be reckoned.

Genesis 25:6
But while he was still alive, Abraham gave gifts to the sons of his concubines and sent them away from his son Isaac to the land of the east.

Exodus 21:7-11
And if a man sells his daughter as a servant, she is not to go free as the menservants do. / If she is displeasing in the eyes of her master who had designated her for himself, he must allow her to be redeemed. He has no right to sell her to foreigners, since he has broken faith with her. / And if he chooses her for his son, he must deal with her as with a daughter. ...

Ruth 4:11
“We are witnesses,” said the elders and all the people at the gate. “May the LORD make the woman entering your home like Rachel and Leah, who together built up the house of Israel. May you be prosperous in Ephrathah and famous in Bethlehem.

1 Samuel 1:2
He had two wives, one named Hannah and the other Peninnah. And Peninnah had children, but Hannah had none.

1 Chronicles 2:46-48
Caleb’s concubine Ephah was the mother of Haran, Moza, and Gazez. Haran was the father of Gazez. / The sons of Jahdai: Regem, Jotham, Geshan, Pelet, Ephah, and Shaaph. / Caleb’s concubine Maacah was the mother of Sheber and Tirhanah.

1 Chronicles 7:13
The sons of Naphtali: Jahziel, Guni, Jezer, and Shallum—the descendants of Bilhah.

Matthew 1:2
Abraham was the father of Isaac, Isaac the father of Jacob, and Jacob the father of Judah and his brothers.

Luke 3:34
the son of Jacob, the son of Isaac, the son of Abraham, the son of Terah, the son of Nahor,