Genesis 29:25-28

But when Jacob woke up in the morning—it was Leah! “What have you done to me?” Jacob raged at Laban. “I worked seven years for Rachel! Why have you tricked me?” “It’s not our custom here to marry off a younger daughter ahead of the firstborn,” Laban replied. “But wait until the bridal week is over; then we’ll give you Rachel, too—provided you promise to work another seven years for me.” So Jacob agreed to work seven more years. A week after Jacob had married Leah, Laban gave him Rachel, too.