Genesis 29:27-31

Complete the week of this one, and we will give you the other also in return for serving me another seven years.” Jacob did so, and completed her week. Then Laban gave him his daughter Rachel to be his wife. (Laban gave his female servant Bilhah to his daughter Rachel to be her servant.) So Jacob went in to Rachel also, and he loved Rachel more than Leah, and served Laban for another seven years. When the LORD saw that Leah was hated, he opened her womb, but Rachel was barren.