And he overthrew those cities, and all the plain, and all the inhabitants of the cities, and that which grew upon the ground.

Wesley's Notes

19:25 And he overthrew the cities, and all the inhabitants of them, the plain, and all that grew upon the ground - It was an utter ruin, and irreparable; that fruitful valley remains to this day a great lake, or dead sea. Travelers say it is about thirty miles long, and ten miles broad. It has no living creature in it: it is not moved by the wind: the smell of it is offensive: things do not easily sink in it. The Greeks call it Asphaltis, from a sort of pitch which it casts up. Jordan falls into it, and is lost there. It was a punishment that answered their sin. Burning lusts against nature were justly punished with this preternatural burning.

Matthew Henry's Concise Commentary

19:1-29 Lot was good, but there was not one more of the same character in the city. All the people of Sodom were very wicked and vile. Care was therefore taken for saving Lot and his family. Lot lingered; he trifled. Thus many who are under convictions about their spiritual state, and the necessity of a change, defer that needful work. The salvation of the most righteous men is of God's mercy, not by their own merit. We are saved by grace. God's power also must be acknowledged in bringing souls out of a sinful state If God had not been merciful to us, our lingering had been our ruin. Lot must flee for his life. He must not hanker after Sodom. Such commands as these are given to those who, through grace, are delivered out of a sinful state and condition. Return not to sin and Satan. Rest not in self and the world. Reach toward Christ and heaven, for that is escaping to the mountain, short of which we must not stop. Concerning this destruction, observe that it is a revelation of the wrath of God against sin and sinners of all ages. Let us learn from hence the evil of sin, and its hurtful nature; it leads to ruin.