Genesis 29:30-34

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

31And Jehovah saw that Leah was hated, and he opened her womb: but Rachel was barren. 32And Leah conceived, and bare a son, and she called his name Reuben: for she said, Because Jehovah hath looked upon my affliction; for now my husband will love me. 33And she conceived again, and bare a son: and said, Because Jehovah hath heard that I am hated, he hath therefore given me this son also: and she called his name Simeon. 34And she conceived again, and bare a son; and said, Now this time will my husband be joined unto me, because I have borne him three sons: therefore was his name called Levi.