Genesis 29:23-26

23Now in the evening he took his daughter Leah, and brought her to him; and Jacob went in to her.

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

25So it came about in the morning that, behold, it was Leah! And he said to Laban, “1What is this you have done to me? Was it not for Rachel that I served with you? Why then have you 2deceived me?”

26But Laban said, “It is not 3the practice in our place to 4marry off the younger before the firstborn.