30 Now Lot went up from Zoar, and lived in the mountain together with his two daughters, for he was afraid to stay [any longer] in Zoar; and he lived in a cave with his two daughters. 31 The firstborn said to the younger, “Our father is aging, and there is not a man on earth [available] to be intimate with us in the customary way [so that we may have children]. 32 Come, let us make our father drunk with wine, and we will lie with him so that we may preserve our family through our father.”

33 So they gave their father wine that night, and the firstborn went in and lay with her father; and he did not know when she lay down or when she got up [because he was completely intoxicated]. 34 Then the next day, the firstborn said to the younger, “Behold, I lay with my father last night; let us make him drunk with wine tonight also, and then you go in and lie with him, so that we may preserve our family through our father.” 35 So they gave their father wine that night also, and the younger got up and lay with him; and again he did not know when she lay down or when she got up.

36 Thus both the daughters of Lot conceived by their father. 37 The firstborn gave birth to a son, and named him Moab (from father); he is the father of the Moabites to this day. 38 The younger also gave birth to a son and named him Ben-ammi (son of my people); he is the father of the Ammonites to this day.

Genesis 19:30-38 (AMP)

Father’s failure

So Lot was spared (along with his two daughters) from the destruction of Sodom. The angels had told him to flee to the mountains but he feared he wouldn’t make it. His request (v21) was granted to flee to Zoar (rather than the mountains). But then a few sinful character issues creep in:

• He becomes fearful living in Zoar and flees to the mountains after all! Why did he flee? We don’t know, but he fled. Fear is a lack of faith. When he got to the mountains they dwelled alone in a cave. That’s a pretty drastic fear response. 
• Somehow they managed to bring wine from Zoar and he got not just drunk, but smashed. Not just once, but twice! Remember Noah and his son’s? No matter when and where, getting drunk is sin and opens the door to all kinds of other sins.

Affects Family

It’s not just Lot’s sin of drunkenness that leads to this incident. It’s also his fear; it was contagious. His daughters feared they’d never have families so their lives would amount to nothing. Wanting children is righteous, but their means was all sin. I wonder if Lot’s action back in Sodom when the men of Sodom sought perverted sex with the angels impacted his daughters? Remember Lot’s response? He offered his own daughters to the mob to ravish as they pleased – in order to protect his guests.

Lasting consequences

The children became the Moabites and Ammonites. The Moabites, though pagans, were relatively peaceful with Israel. Ruth (of the book by her name) was a Moabite and one of the few women named in the lineage of Jesus. The Ammonites, on the other hand, fought with Israel. King Saul subjugated them and David continued that. Their god was Molech. “Molech was a fire-god with the face of a calf; his images had arms outstretched to receive the babies who were sacrificed to him. Like their god, the Ammonites were cruel.” (gotquestions.org)

RЯeflection

• There are consequences for sin. God is merciful and He can turn evil to good (Romans 8:28) but sin breaks the relationship with the Father and leads to consequences. Be quick to confess and repent. Remember that repentance is turning from the sinful ways and walking as Jesus walked (1 John 2:6).
• Do you have an addiction? It might be a substance but it could be anything. Whatever we use to gratify the desires of our flesh and take our dependence off God is a sin. Deal with it. Seek help and accountability.