Genesis 30:5-8 King James Version (KJV)
5 And Bilhah conceived, and bare Jacob a son.
6 And Rachel said, God hath judged me, and hath also heard my voice, and hath given me a son: therefore called she his name Dan.
7 And Bilhah Rachel's maid conceived again, and bare Jacob a second son.
8 And Rachel said, With great wrestlings have I wrestled with my sister, and I have prevailed: and she called his name Naphtali.