Genesis 30
3 Ref Then she said, Here is my servant Bilhah, go in to her, so that she may have a child on my knees, and I may have a family by her.
4 Ref So she gave him her servant Bilhah as a wife, and Jacob went in to her.
5 And Bilhah became with child, and gave birth to a son.
6 Ref Then Rachel said, God has been my judge, and has given ear to my voice, and has given me a son; so he was named Dan.