Genesis 19:31-33

American Standard Version

³¹ And the first-born said unto the younger, Our father is old, and there is not a man in the earth to come in unto us after the manner of all the earth: ³² come, let us make our father drink wine, and we will lie with him, that we may preserve seed of our father. ³³ And they made their father drink wine that night: and the first-born went in, and lay with her father; and he knew not when she lay down, nor when she arose.