Genesis 29:30-34

30And he went in also to Rachel; and he loved also Rachel more than Leah. And he served with him yet seven other years.

31And when Jehovah saw that Leah was hated, he opened her womb; but Rachel was barren.

32And Leah conceived, and bore a son, and called his name Reuben; for she said, Because Jehovah has looked upon my affliction; for now my husband will love me.

33And she again conceived, and bore a son, and said, Because Jehovah has heard that I am hated, he has therefore given me this one also; and she called his name Simeon.

34And she again conceived, and bore a son, and said, Now this time will my husband be united to me, for I have borne him three sons; therefore was his name called Levi.