31 One day the older daughter said to the younger, "Our father is getting old and there's not a man left in the country by whom we can get pregnant. 32 Let's get our father drunk with wine and lie with him. We'll get children through our father - it's our only chance to keep our family alive." 33 They got their father drunk with wine that very night. The older daughter went and lay with him. He was oblivious, knowing nothing of what she did. 34 The next morning the older said to the younger, "Last night I slept with my father. Tonight, it's your turn. We'll get him drunk again and then you sleep with him. We'll both get a child through our father and keep our family alive." 35 So that night they got their father drunk again and the younger went in and slept with him. Again he was oblivious, knowing nothing of what she did.
Matthew Henry's Commentary on Genesis 19:31-35
Commentary on Genesis 19:30-38
(Read Genesis 19:30-38)
See the peril of security. Lot, who kept chaste in Sodom, and was a mourner for the wickedness of the place, and a witness against it, when in the mountain, alone, and, as he thought, out of the way of temptation, is shamefully overtaken. Let him that thinks he stands high, and stands firm, take heed lest he fall. See the peril of drunkenness; it is not only a great sin itself, but lets in many sins, which bring a lasting wound and dishonour. Many a man does that, when he is drunk, which, when he is sober, he could not think of without horror. See also the peril of temptation, even from relations and friends, whom we love and esteem, and expect kindness from. We must dread a snare, wherever we are, and be always upon our guard. No excuse can be made for the daughters, nor for Lot. Scarcely any account can be given of the affair but this, The heart is deceitful above all things, and desperately wicked: who can know it? From the silence of the Scripture concerning Lot henceforward, learn that drunkenness, as it makes men forgetful, so it makes them to be forgotten.