Genesis 19:36

With child by their father. In this action Lot’s daughters revealed the evil influence of Sodom. They had grown to womanhood in a country where drunkenness and all forms of immorality were rampant; consequently, their judgment was dull and their conscience numb. Lot had been able to protect his daughters from becoming victims of the Sodomites (see v. 8), but he had not been as successful in fixing the principles of right in their hearts. They are more to be pitied than blamed, for Lot himself shared in their sin. He was responsible for the circumstances that led up to it, as he was also for drinking the wine they set before him (see on ch. 9:21). The price Lot paid for a few years in Sodom was the loss of his entire family. The vile and idolatrous Moabites and Ammonites were his only posterity.