12 The two men said to Lot, “Do you have anyone else here—sons-in-law, sons or daughters, or anyone else in the city who belongs to you? Get them out of here,
13 because we are going to destroy this place. The outcry to the Lord against its people is so great that he has sent us to destroy it.”
14 So Lot went out and spoke to his sons-in-law, who were pledged to marry his daughters. He said, “Hurry and get out of this place, because the Lord is about to destroy the city!” But his sons-in-law thought he was joking.

Wickedness was great in Sodom, and they would not regret it. Therefore, the angels should no longer delay the judgment. But first, they revealed to Lot the divine plans for that place.