Genesis 30:1-5

Now when Rachel saw that she bore Jacob no children, Rachel envied her sister, and said to Jacob, “Give me children, or else I die!” And Jacob’s anger was aroused against Rachel, and he said, “Am I in the place of God, who has withheld from you the fruit of the womb?” So she said, “Here is my maid Bilhah; go in to her, and she will bear a child on my knees, that I also may have children by her.” Then she gave him Bilhah her maid as wife, and Jacob went in to her. And Bilhah conceived and bore Jacob a son.