Genesis 29:28-31

Jacob complied with Laban’s request. After he completed the prescribed week of Leah’s wedding feast, Laban gave his daughter Rachel to be his wife, and he slept with her. Rachel was his true love, not Leah. (Laban assigned Bilhah as his daughter Rachel’s servant.) And Jacob remained there serving Laban for another seven years. When YAHWEH saw that Leah was unloved, he opened her womb, but Rachel remained childless.