Genesis 19:31-33

Complete Jewish Bible

³¹ The firstborn said to the younger, “Our father is old, and there isn’t a man on earth to come in to us in the manner customary in the world. ³² Come, let’s have our father drink wine; then we’ll sleep with him, and that way we’ll enable our father to have descendants.”

³³ So they plied their father with wine that night, and the older one went in and slept with her father; he didn’t know when she lay down or when she got up.