Genesis 29:22-30

So Laban gathered together all the people of the place and made a feast. But in the evening he took his daughter Leah and brought her to Jacob, and he went in to her. (Laban gave his female servant Zilpah to his daughter Leah to be her servant.) And in the morning, behold, it was Leah! And Jacob said to Laban, “What is this you have done to me? Did I not serve with you for Rachel? Why then have you deceived me?” Laban said, “It is not so done in our country, to give the younger before the firstborn. 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.