Genesis 29:26-30

29:26 “It is not our custom here,” Laban replied, “to give the younger daughter in marriage before the firstborn. 29:27 Complete my older daughter’s bridal week. Then we will give you the younger one too, in exchange for seven more years of work.”

29:28 Jacob did as Laban said. When Jacob completed Leah’s bridal week, Laban gave him his daughter Rachel to be his wife. 29:29 (Laban gave his female servant Bilhah to his daughter Rachel to be her servant.) 29:30 Jacob had marital relations with Rachel as well. He loved Rachel more than Leah, so he worked for Laban for seven more years.