Genesis 30:4

When Rachel saw that she bore Jacob no children, Rachel envied her sister. She said to Jacob, “Give me children, or else I will die.”

Jacob’s anger burned against Rachel, and he said, “Am I in God’s place, who has withheld from you the fruit of the womb?”

She said, “Behold, my maid Bilhah. Go in to her, that she may bear on my knees, and I also may obtain children by her.”

Bilhah conceived, and bore Jacob a son.

Rachel said, “God has judged me, and has also heard my voice, and has given me a son.” Therefore she called his name Dan.

Bilhah, Rachel’s servant, conceived again, and bore Jacob a second son.