These were the sons and grandsons born to Jacob and Bilhah. Laban had given Bilhah to his daughter Rachel. The total number of people in the family line of Jacob and Bilhah was seven.
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.