Based on the book of Genesis.
Three angels sent by God appeared near Abraham's tent on their way to Sodom and Gomorrah, and he offered to feed them and let them rest for moment. When the Angels got up to leave, they told Abraham of their trip to Sodom to investigate the activities there and see if the city must be destroyed. Abraham pleaded with them not to destroy Sodom for there may be as few as 50 good people there among the evil. The Angels said they would not destroy the city if there were 50 good there. But Abraham kept repeating the question lowering the number each time ( 45, then 40, 30, 20, and 10 ).
I wondered what would have happened if the Angels got annoyed with Abraham constantly repeating the same question.
So what the Angels did was remove four good people from the city later, right before hitting the city with practically a nuclear bomb.