All these were Jacob’s sons from his wife’s servant, Zilpah. (Zilpah was the maid that Laban had given to his daughter Leah.) There were 16 people in this family.
In the morning Jacob saw that it was Leah he had slept with, and he said to Laban, “You have tricked me. I worked hard for you so that I could marry Rachel. Why did you trick me?”