Lot's Daughters: Despair to Incest (Genesis 19:30-38)

Believing they are alone after the destruction of Sodom and Gomorrah, the daughters of Lot decide to repopulate the world through incest with their father.  The elder sister convinces the younger, and on two consecutive nights they get Lot drunk in their cave-dwelling and trick him into fathering their children.  Resulting from these unions are the Biblical tribes of Moab and Ammon.