“So Lot went out and said to his sons-in-law, who were to marry his daughters, ‘Up! Get out of this place, for the Lord is about to destroy the city.’ But he seemed to his sons-in-law to be jesting.”
On the bright side, at least Lot didn’t have to start with an explanation of who “the Lord” was. He had at least that much of a testimony: that he was a worshiper of Yahweh, as opposed to whatever god or gods were worshiped in Sodom, where he had rather unwisely made his home.
Evidently his prospective sons-in-law knew that much about him.