Genesis 19:35

And they made their father drink wine that night also ,.... Until he was drunk; which is an aggravation of his sin, that he should be overtaken a second time, and that so soon as the next night, when he ought to have been upon his guard, knowing how he had fallen into it the night before:

and the younger arose and lay with him ; arose from her own bed, and went to her father's, and lay down by him:

and he perceived not when she lay down, nor when she arose ; See Gill on Genesis 19:33 .