Genesis 29:29-31 American Standard Version (ASV)
29 And Laban gave to Rachel his daughter Bilhah his handmaid to be her handmaid. 30 And he went in also unto Rachel, and he loved also Rachel more than Leah, and served with him yet seven other years.
31 And Jehovah saw that Leah was hated, and he opened her womb: but Rachel was barren.
Genesis 29:29-31 New International Version (NIV)
29 Laban gave his servant Bilhah to his daughter Rachel as her attendant. 30 Jacob made love to Rachel also, and his love for Rachel was greater than his love for Leah. And he worked for Laban another seven years.
31 When the Lord saw that Leah was not loved, he enabled her to conceive, but Rachel remained childless.