Genesis 30:3-5

New Century Version

³ Then Rachel said, “Here is my slave girl Bilhah. Have sexual relations with her so she can give birth to a child for me. Then I can have my own family through her.”

⁴ So Rachel gave Bilhah, her slave girl, to Jacob as a wife, and he had sexual relations with her. ⁵ She became pregnant and gave Jacob a son.