Genesis 29:25-28

So it came to pass in the morning, that behold, it was Leah. And he said to Laban, “What is this you have done to me? Was it not for Rachel that I served you? Why then have you deceived me?” And Laban said, “It must not be done so in our country, to give the younger before the firstborn. Fulfill her week, and we will give you this one also for the service which you will serve with me still another seven years.” Then Jacob did so and fulfilled her week. So he gave him his daughter Rachel as wife also.