Then Rachel let Jacob marry Bilhah,
and Sarai said to Abram, “The LORD has not given me any children. Sleep with my slave, and if she has a child, it will be mine.” Abram agreed,
Nahor also had another wife. Her name was Reumah, and she had four sons: Tebah, Gaham, Tahash, and Maacah.
Abraham married Keturah,
and they had a son.
The two servant women, Zilpah and Bilhah, together with their children went first, followed by Leah and her children, then by Rachel and Joseph.
During their time there, Jacob's eldest son Reuben slept with Bilhah, who was one of Jacob's other wives. And Jacob found out about it.
Someone from your own family will cause you a lot of trouble, and I will take your wives and give them to another man before your very eyes. He will go to bed with them while everyone looks on.