What does Genesis 19:14 mean?
Given the opportunity by the angels to warn any of those close to him to flee the city before God's judgment came, Lot steps outside again. Given how recently an angry mob had been trying to break down his door, Lot is taking another risk. He is willing to risk his own life if he might save others.This verse tells us that Lot does indeed have two sons-in-law, men from Sodom who are engaged to marry his two virgin daughters. Awkwardly, prior verses suggest they were not morally upright men, since verse 4 indicated that every man in the city was in the mob surrounding Lot's house. This would suggest that Lot's own prospective sons-in-law were part of a crowd demanding he send the two strangers out for them to have sex with. Lot's choice to live as the only righteous man in Sodom meant the only men available to marry his daughters were themselves wicked.
Still, Lot considers these men family. He urgently warns them to leave this city God is about to destroy. They decide Lot must be joking. It's possible they assumed Lot's experience with the mob had given him a moment of insanity. Or, they had gotten into the habit of ignoring Lot's opinion on spiritual issues. They will soon learn he is neither crazy, nor being playful.