Genesis 29:22 (KJV)

Leah was tender eyed; but Rachel was beautiful and well favoured.

And Jacob loved Rachel; and said, I will serve thee seven years for Rachel thy younger daughter.

And Laban said, It is better that I give her to thee, than that I should give her to another man: abide with me.

And Jacob served seven years for Rachel; and they seemed unto him but a few days, for the love he had to her.

And Jacob said unto Laban, Give me my wife, for my days are fulfilled, that I may go in unto her.

And it came to pass in the evening, that he took Leah his daughter, and brought her to him; and he went in unto her.

And Laban gave unto his daughter Leah Zilpah his maid for an handmaid.

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.