Genesis 19:1-2, 29

The two angels arrived at Sodom in the evening. Lot was sitting at the city gate. He saw them and got up to welcome them, bowing before them and said, “Please, my friends, come to my house and stay the night. Wash up. You can rise early and be on your way refreshed.” They said, “No, we’ll sleep in the street.”

And that’s the story: When God destroyed the Cities of the Plain, he was mindful of Abraham and first got Lot out of there before he blasted those cities off the face of the Earth.