Here is the story of the family line of Jacob. Joseph was a young man. He was 17 years old. He was taking care of the flocks with some of his brothers. They were the sons of Bilhah and the sons of Zilpah, the wives of his father Jacob. Joseph brought their father a bad report about his brothers.
Then she said,“ Here’s my servant Bilhah. Sleep with her so that she can have children for me. Then I too can have a family through her.”So Rachel gave Jacob her servant Bilhah as a wife. Jacob slept with her.And Bilhah became pregnant. She had a son by him.Then Rachel said,“ God has stood up for my rights. He has listened to my prayer and given me a son.” So she named him Dan.Rachel’s servant Bilhah became pregnant again. She had a second son by Jacob.Then Rachel said,“ I’ve had a great struggle with my sister. Now I’ve won.” So she named him Naphtali.
While Israel was living in that area, Reuben went in and slept with Bilhah. She was the concubine of Reuben’s father. And Israel heard about it. Here are the 12 sons Jacob had.