Genesis 29:23-26

23Now it came to pass in the evening, that he took Leah his daughter and brought her to Jacob; and he went in to her.

24And Laban gave his maid Zilpah to his daughter Leah as a maid.

25So 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?”

26And Laban said, “It must not be done so in our country, to give the younger before the firstborn.