Genesis 30:4
So Rachel gave Jacob her woman servant Bilhah to be his wife, and Jacob had sex with her.
Genesis 16:3-4
Abram listened to Sarai's suggestion, so Abram's wife Sarai took her Egyptian servant, Hagar, and gave her as a wife to her husband Abram. This took place ten years after Abram had settled in the land of Canaan.
Genesis 21:10
she told Abraham, "Throw out this slave girl, along with her son, because this slave's son will never be a co-heir with my son Isaac!"
Genesis 22:24
Also, his concubine Reumah gave birth to Tebah, Gaham, Tahash, and Maacah.
Genesis 25:1
Abraham had taken another wife whose name was Keturah.
Genesis 25:6
While he was still alive, Abraham gave gifts to his concubines and sent them to the east country in order to keep them away from his son Isaac.
Genesis 33:2
Then he positioned the women servants and their children first, then Leah and her children next, and then Rachel and Joseph after them.
Genesis 35:22
But while Israel lived in that land, Reuben went inside his father's tent and had sexual relations with his father's concubine Bilhah, and Israel heard about it. Now Jacob had twelve sons.
2 Samuel 12:11
"This is what the LORD says: ""Listen very carefully! ""I'm raising up evil against you right out of your own household. ""I'm going to take your wives away from you right before your eyes. ""Then I'll give them to your neighbor. ""And then he's going to have sex with your wives in broad daylight!