And the firstborn 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:

Come, let us make our father drink wine, and we will lie with him, that we may preserve seed of our father.

And it came to pass on the morrow, that the firstborn said unto the younger, Behold, I lay yesternight with my father: let us make him drink wine this night also; and go thou in, {and} lie with him, that we may preserve seed of our father.

And they made their father drink wine that night also: and the younger arose, and lay with him; and he perceived not when she lay down, nor when she arose.