Genesis 29:25-29

And it came to pass, that in the morning, behold, it was Leah: and he said to Laban, What is this thou hast done unto me? did not I serve with thee for Rachel? wherefore then hast thou beguiled me?

And Laban said, It must not be so done in our country, to give the younger before the firstborn.

Fulfil her week, and we will give thee this also for the service which thou shalt serve with me yet seven other years.

And Jacob did so, and fulfilled her week: and he gave him Rachel his daughter to wife also.

And Laban gave to Rachel his daughter Bilhah his handmaid to be her maid.