Genesis 29:24-26

29:24 (Laban gave his female servant Zilpah to his daughter Leah to be her servant.)

29:25 In the morning Jacob discovered it was Leah! So Jacob said to Laban, “What in the world have you done to me! Didn’t I work for you in exchange for Rachel? Why have you tricked me?” 29:26 “It is not our custom here,” Laban replied, “to give the younger daughter in marriage before the firstborn.