Genesis 29:27-31

Finish this daughter’s bridal week; then we will give you the younger one also, in return for another seven years of work.” And Jacob did so. He finished the week with Leah, and then Laban gave him his daughter Rachel to be his wife. Laban gave his servant Bilhah to his daughter Rachel as her attendant. Jacob made love to Rachel also, and his love for Rachel was greater than his love for Leah. And he worked for Laban another seven years. When the LORD saw that Leah was not loved, he enabled her to conceive, but Rachel remained childless.